Hey, were you BirdPrincessOfficial on Tumblr? I was Fullmetalpon-3 and loved your art! (And I was also hoping I could get a bit of advice with something.)
Oh, haha, I remembered the name of your art blog and searched for that! I'm so glad I was able to find you! I vaguely remember you selling bags with prints you drew for Gravity Falls on Redbubble (Or a similar website). I want to make some stickers for anime and the like and sell them. Do you have any advice on what website to do it on and if you've ever had any trouble with selling fanart of copyrighted characters?