I personally have been using Pixiv more in the past few years because I noticed better quality stuff. You also can see also see art of famous manga drawers and other work involving H doujins as well. Not to mention I rarely find any stolen artwork there. These days DevArt has too many people uploading other people's artwork esp. from sites like pixiv. They figure just cuz they found it in a japanese site like no one else goes there as well. What's worse is that Dev mods take forever to take action.
Oh geez, I completely missed the fact that you had written something else. I'm so sorry to hear that you made something that you disliked, I believe that this was approximately my fourth attempt at an AMR sig, so keep trying! I went through many ideas until I found something that looked decent!