I've seen a lott of your artwork and this one is amazing.
She look very realistic, especially the skin. Lips and chin are good in proportions, even with the heavy make up and the purple hair. Intimidating eyecolor. Everything fits together. You've taken a lott of time for the little details for example the tattoo's are done very very good. The cigarette looks very good. Not knowing if it's a fake or real one, the only little, very little thing is the flower. Proportions and colors are good, but a little bit more structure in the leaves wouldn't hurt.
Love seeing an other black widow than Scarlet Johansson