mmmm,how to make it pop!!
well let me first tell you,what a great job you have done with a very complicated painting,beautifull color harmony,and great composition
if you paint all the areas that are in the shadow much darker,the lady and stage will come out much brighter,like two sites of a coin;there is no light without darkness
also cool colors against warm colors,can make tings stand out
your shadows are to grey,the lady has hardly any shadow,like under her arm and on the back of her neck,you can make the arm darker and have just a highlight on the top
I hope this helps,if not come back for more!!