hmm, only thing I cant hink to say is to draw while in your room, or at school (but if your worried about your bro seeing it, school probably wouldnt be a good idea anyway) If your parents get involved (hopefully not until youre ready to "come out"), I'd tell them that Im very self concious about my art and dont want anyone to see it. Hopefully your brother knows to respect peoples privacy. Oh wait I got another idea, you can draw in the bathroom! Privacy all the way. Hope I helped.