Well, I'm surprised no one has commented yet, so I suppose I will!
I'm not amazing at art tips, but I do have a few! First, I suggest working on your canine anatomy a little bit! Fr example, in your wolf example's head/neck seems a little... off? It feels like its a little too scrunched, or something. The face on your very first example (in the first spoiler) also seem a bit off, but it could be just because you were more focusing on the outfits.
Other than that, well... I honestly love your art! I'm awful at pricing, but I do now I would definitely buy some if I had a paypal! Personally, my favorite is that watercolor piece, it's beautiful! I also really love that monochrome piece! Honestly, this is pretty amazing for someone so young!