Personally I've been her two and a half year, and I've only had two "popular" images... Or at least two images that's got above average likes :3 I suggest that you try draw things yourself though, and avoid using too many linearts. People don't usually look at colored in images, and cares a lot more for custom images. Also, I suggest that you avoid using burn and dodge tool too much, because it can turn out kind of odd after a while D: Did that in the beginning, and soon got a comment suggesting to not use those two tools too much when shading etc.
Hope it helped, though you've done a good job so far

Add a bit more details into it, and you're good
