Comics didn't screw up female character art, cookies for everyone! But really look at this, it looks great! I can't wait to read more Spider-Gwen to be honest. Funny thing is it kind of checks off somethings that usually are wrong with art of female characters.
Yes her body is an unnatural and uncomfortable looking position that shows it off but its main purpose isn't sexiness. It is to show her athletic acrobatics. The fact it is kinda hot is just a secondary benefit. Yeah you do get boobs and a little butt pose (does sidebutt count?) but it isn't the focus. I would not be surprised if there was already a Spider-Man cover similar to this which is probably a good litmus test.
Keep up the good work Spider-Gwen, maybe one day we will get a movie about you.