This is so fucking gorgeous hun! I think this is your best work yet, seriously. I'm gonna list the few little critiques i have, and then I'll tell you the THOUSANDS OF THINGS THAT ARE AMAZING ABOUT THIS.
I literally only have three tiny critiques for this piece. For the white fur, you did a really, really good job of making it look like a different texture than the clothing. That said, you lose the texture in the blue fur. the left arm is the best place for the blue fur's texture, so continue doing what you did on that arm through the entire piece and you'll have nailed it!
The shading is divine. The colors blend so well together and look great together, especially the shading in the hair/braid. A more defined light source would make the piece more immersive, and I think the purple crystal is letting off enough light to have a little bit more impact of the color of, say, the character's left elbow or the beads on her belt. just a little purple shine would add a lot of depth and tie everything together.
Last critique before I start drowning you in the endless compliments I could come up with for this piece is the right hand. The fingers are positioned exactly right, the fingers are just skinnier than you drew them on the left hand.
This is seriously so amazing. You absolutely nail the lineless, painted style. The colors are so pretty, the palette is very pleasing to the eye. I love love LOVE her expression, and you CRUSHED the pose. The anatomy and the way she's holding he violin is PERFECT. Plus, the violin itself. Holy shit. I struggle so hard with inanimate objects, and it's easy to tell you took your time to look at plenty of references and nail the depth and the texture of the wood and just HOLY SHIT MAN. THAT FUCKING VIOLIN. I love how it has gems embedded in it and how the purple magic ties everything together. plus I FUCKING ADORE HOW YOU DID THE MAGIC INSTRUMENTS LIKE FUCK. OH MY GOD THOSE ARE SO COOL SHE HAS THE COOLEST POWER EVER JESUS I LOVE IT. Her left hand is fucking gorgeous. I hate hands. And you nailed it. The little details like the design in her necklace really pull the onlooker into this piece. you did a great job with the perspective. like holy shit the violin looks like it's coming out of the screen at you.
All in all, this is a fucking GORGEOUS piece. I seriously would pay TONS to get a commission like this one, and I'm sure you made the customer just as happy and amazed as I am.
Keep this shit up, it's fucking perfect.