>>1896862(Next time you want criticism, posting the vector + source material would help)
>Minimalism involves taking images and reducing them down to basic colors and removing most features. Most wallpapers will not include shadowing or faces, but this is subjective. I think it looks fine here. You did a good job with this. Most of the problems are very minor, Green = Color problem. Cyan = Curvature problem.
>ShadingJacket pocket should just be one color. In certain spots (armpit & sleeve) the shadow doesn't align with the corner. This creates visual discontinuity- it would look better if it matches the corner exactly.
>Color peekingMild color peeking issues. You can see white peek through the necktie, the white stripe doesn't quite reach the collar, and the jacket overlaps the skirt when it should be behind it. There's a strange spot by hand that could be color peeking. If it's not supposed to join with the hand, you should make the fingertip not as pointy.
>Hair curvatureSome of the curvature in her bangs looks a little off. This is tricky to get right. Always consider the "flow" direction of the hair. Try to make it look as natural as possible, don't let it get too thin or stay too fat as it approaches the tip. There's also one anchor point by the top that looks unnatural. I'd recommend removing it.
>Hand curvatureOne of the knuckles and the corner where hand meets sleeve look a little too pointy. Consider smoothing them out. Your lines separating the fingers don't curve consistently at the tips. Also the index finger looks a little too big.
>Jacket curvatureButtons would look better if they were the same (just copy and paste). Your white stripe fluctuates width at the bottom. That shouldn't happen.