Images/Decals

I'm not really an experienced Roblox Studio person so forgive me if this question is silly.

So I'm working on a horror survival game just for fun and I usually add images of different enemies into my game. Recently I got a warning for uploading my own image and today I got a 1 day ban for another image for including gore.

In retrospect I should've known that these images would violate to ToS (one image was the Jeff image) but I was just wondering if there was a way I can check beforehand if an image is inappropriate or if I should stick to using already uploaded decals.