Wow! What are you talking about? These are beautiful! I really like the pattern details you've added.
The Jirachi girl looks kind of stiff though in comparison to your other pieces. Try to make it flow more. Make the s line less inward to make it more natural and work on the arms to make it less boxy looking. It's mainly the pose though. If they were sitting down together maybe it would have been less stiff? I love Jirachi itself though c:
The girl holding the pillow might also need some work on the shading. You don't have to focus on every single edge that might seem to look like it could have some shadows, just focus on how the light might hit certain angles. I usually look at a well-lit picture of people to see how the light would hit them.
The hands also definitely need work of course. Some are too skinny while some like with Akali is too big lol. You should think of the hands as a bunch of lines, circles, and cylinders with little circles as the joints.
Overall though, your art is some of the best ones I've seen^^ I'm not really good at critiquing, but hopefully I was of some help. I would also totally buy your art if you ever open up a shop!