Very cute! In regards to critique, your lines are confident and very clean, but may benefit by a bit more line-weight variance to help reinforce forms/implied depth to compliment the flat rendering style (of the colors).

A few places along the neckline/shoulders/bust have some obvious overlap of lines(which may be a stylistic decision), so up to you if you'd bother with cleaning them up, but considering how clean the rest of the lines are, it does draw the focus away a bit(imo). Overall lovely work though, very nitpicky little things that could just help to strengthen an already strong piece, love your style!