the heels are definitelty a no no !!!
the shirt is gorgeous but i dont think it's great with the skirt. This skirt should be worn with really simple clothes as it's a piece of art
I think black pumps would make this look more streamlined and would make the outfit flow better. Right now I'm looking at the shoes then the tights and the skirt individually, not as an outfit.
I would add a cropped black topper - short jacket or blazer. Even a moto would look great. Switch out the nude pumps for black or add black combat boots, or other black boot.
That skirt is so cool! It looks like something you would see in a magazine. It has somewhat of a goth vibe to it, and it's awesome that you paired that with a girly, lacy top! :)