Hi @NicholeMarie,
I'm also a graphic designer, I was in your position about 3 years ago when I was trying to improve my illustration skills.
Would I buy this piece? I don't know about a print but a coffee mug? sure!
I agree with @NessIllustration better planning on your illustration helps a lot. Once I hit the pose I'm going to draw I usually do it 2-3 times over just to get the linework as smooth as possible. Then, I proceed with color. I would suggest a richer color palette for this piece.
I know it might be overwhelming to put your art out there to get some feedback. But this is part of the process and a very important one. Feel free to show us more pieces.