I'm sure you have a merchandising license from Marvel for this, right? I mean, you're trying to profit off of someone else's Intellectual Property and advertising on a semi-official Spider-Man subreddit on an internationally known website where Disney's lawyers will no doubt see this, so I just assume you have the legal right to make a profit from selling their characters' likenesses on the Internet.
Looking at your post history, it's all spamming to sell these things, so you came here with that in mind, which means this was your business model. Surely, you wouldn't try to make a large profit with Marvel's characters without permission in such a high-profile place, would you?
Either way, cut this out. I'm sure some white knights will ride in and try to rescue you, but the fact is you're selling something you don't own and trying to profit from it, and legally that's a big no-no.
That aside, it IS good work. It's just that you don't have the legal contracts to make money selling it.