I love it when I'm browsing through the art portal and something really catches my eye. I love the colors and overall style of it all. Sometime the art portal is so saturated with forgettable things, but I reaaally like this style you got brewing. I'd pursue something in that direction if you haven't decided to already. However, there are just a few things I'd work on--
First off, I'd tweak the body a bit. I've got nothing against unique body types, but the legs look a bit too wide to suit the character and her pose. Plus the leg up front looks a little odd with it's bend. Also, the way you drew the feet needs some changes too, imo. You made them too tall and the shoe up front doesn't seem to match with the leg. Maybe make the shoes a different color than the socks too if you decide to keep drawing them this way since I almost mistook the sock as part of the shoe.
Second, work on color coordination and text design. Your colors look really nice, but I feel like the green and the yellow are fighting each other. Individually the colors look nice with the character, but together, they don't fit as well. However, I do like the pink band-aids on the legs, that was a really cool decision. As for text design, if you don't like fonts, make sure that the lines are still smooth with the handwriting. It can be a hassle, but it's worth it. The outlines on the words look very pixel-y, plus the words seem oddly placed.
Also a simple background would be a nice touch. Anything besides a solid color works, I know I've personally been playing with multicolored shapes that fit the motion of the piece. It's simple but actually kinda fun and helps a lot.
There's a lot you did right though, no worries, I love it! I just know critiques can be mega helpful. Can't wait to see what you got in store for the future, keep it upppp.