Any tips for painting miniatures?

Yes! :D

First, there are supplies, but you've clearly got some. If you want some suggestions on that front, let me know and I'll edit this comment. :)

The one supply I would go out of my way to suggest, because it's super helpful, can probably be made with stuff you have around the house, and most people don't seem to use it is a wet palette. Here's a useful video on the topic.. (And I'm 90% sure this is who @Kom was talking about. :p) Basically, you take some kind of sealable plastic container, put some layers of damp paper towel on the bottom, and then a layer of parchment paper over that. Then, you use that as your paint palette. It lets water come up to keep your paint wet, without the paint going down. It helps thin your paints, keeps them from drying out as you're painting, and you can even put the lid on when you're done painting, and still work with that same paint the next time you start up again.

Anyway, for actual techniques, off the top of my head:

• Wash your minis first. There's likely some release agent on there, which is the stuff they use to keep the minis from sticking to the molds they were formed in. This will get between the mini and the pint, and keep the paint from sticking on properly.

• Keep in mind, many thin layers are better than one thick layer! Yes, it'll be annoying to paint a layer, know it's not going to cover the mini well, wait for it to try, and do it again, potentially a few times. Still, it will look way more even, and thick layers of paint are WAY more likely to obscure the details on your model and make it end up looking lumpy.

• Also, when painting, try to think about the order you'll paint things, and what will be easier. Generally, you want to paint inside-out. So, if a mini has a recessed area, paint that first, then the area around it. It's WAY easier because, if you go outside the "lines" on the inside, you'll go over it later anyway. If you paint outside-in, then if you mess up the inside and get paint on the outside, you have to go back and redo some work. Sometimes, if you're doing a multi-part model, it might also make sense to do some painting before some of the assembly, like maybe waiting to put a shield on until you paint what's behind it. Optional, since those areas tend to not be super visible anyway.

• Exaggerate! Sometimes you have to go a little beyond what would be "realistic" to make the model look right at that scale, and from a little distance. Don't worry, there's a big gap between "exaggerated to look good at scale" and "cartoony." Though no hate if you like cartoony. ;)

• On the topic of paint sticking on properly, use primer! It's a layer that sticks to both minis and paint, keeping everything together. The color matters, but all of them have ups and downs.

  White will make it easier to get a bright looking mini, especially useful for minis that are supposed to have a lot of light colors on them. Painting white over black is a nightmare.

  Black, in addition to helping create a darker look, will have the added benefit of hiding spots you missed. Didn't hit a certain part of the mini? It's not going to stand out as a bright white spot, and was probably in a shadowy crevice anyway.

  Gray splits the difference.

  If you're painting a mini that's predominantly one color, you can use a primer that's close to that final color. Not super useful for RPGs, but useful for wargames if you've got a ton of units that are going to end up with the same dominant color scheme.

• Start with a base coat. Paint everything the basic color you want it to end up.

• Then, apply a wash. It's basically a thinned, dark paint that will naturally fall into the crevices of the model. You can buy pre-made washes, or make your own, but be careful, since if you water down paint too much it can just break.

• Then, do highlights. It's a little hard to explain here, but look up videos on drybrushing if you haven't already learned it. Also, imagine light coming from above the miniature, and focus on areas that the light would hit, so exposed areas, especially if you can see them from above the model.

• Base your minis! It's an often neglected part of the hobby, but putting a little terrain under your mini's feet can really kick it up a notch and make it look like a little diorama. I always do it.

And finally, don't just take my word for it, but do some research elsewhere if you want to improve. There are a TON of videos on YouTube to show you techniques, and examples of painters painting models. I already linked Tabletop Minions, but I also like Sorastro's Painting, Dr. Faust's Painting Clinic, and Miniac.

...and to reference @Kom again, you can strip the paint off a mini and start over. I like Simple Green because it's safe on plastic models (and naturally will still work on metal), and works well. The downside is that it takes a little longer than more aggressive paint strippers, but I'm willing to make that trade-off.

I'm not much more than a beginner when it comes to mini painting myself, but the best tip I have gotten is to thin your paints a little. It keeps the paint from filling in all the details in the miniature. You might have to paint a couple of layers, but it really makes a huge difference.

My other recommendation for this mini would be to add a wash. With a wash, the pigment will settle into the low points of the miniature, which lets you easily add shading to places that would normally have some shadow, and makes the miniature look a lot less flat. It can really bring out a ton of detail.

I haven't made a post about mini painting in a damn long time ... the first mini I did I ended up stripping the paint and re doing it about 3 times before I was happy with it.

Your mini looks really great, just keep doing that and trying different things. If it doesn't work, paint stripper! and the mistake is gone, one thing I do recommend getting is a wet pallet it will save so much paint. There is countless hours on YouTube on how to paint, I made my way through a lot of them before finding the guy I liked listening to. He is a bit odd and I think that's why I liked his videos best, while very informative he doesn't take things to seriously and jokes / acts a bit of a goose.

Have you all started the new campaign yet?