Absolutely everything! Except maybe a few that are difficult to take as your own if you are not me....
But really, I almost never post the real size and I do not think I need to post the best of qualities since my drawings were made for my own pleasure and no one else really needs the better quality/size ones ;3
Also, for those who say there drawings are not good enough, you are the first one to be thieved from. You will never know it because you think no one will do it.
My sister got one of her pics stolen for a wikipedia page, it was pure luck we found out, she didnt care but I did.
Anyway. Thats why I do. I do not want to take a chance and its not like it does anything to the art You do not need to see every pixel to get how great it is ;3 (Not talking about my art though XD)