>>43717004So uhm... a few disclaimers.
First of all, the dress isn't the same as in the reference, sorry about that OR, I just have no idea how to shade a dress like that. Actually, I don't know how to shade or color a drawing properly at all, but I still wanted to give it a shot. If you just don't like the coloring or the shading, I posted a lineart-only version in imgur (https://imgur.com/a/Ty7tP7v).
There are quite a few problems with it, but I hope you enjoy it regardless!