Just be yourself. Find a community, like this but it would be better if not a virtual one, where you can relate and be yourself. Find your way with them. If you really believe on and love what you do, why should you be afraid of "others'" opinion? Though I recommend that first, make your parents understand who you are or why you are doing things that seem alien to them. It would be a lot easier for you to be happy if you're happy at your own home
Do it. Make them understand why you do the things you do, in any way possible. Don't be afraid of what their comments are going to be. Just talk to them respectfully and, let's hope, they will listen with respect too.