Decorating An Art Studio?

Recently, my Mum said that I could use our shed/garage as an art studio. At the moment its quite boring looking and I want to redecorate it. Thing is I have got 0 ideas! I've tried Google Image searching 'art studio' but nothing comes up. Im 15 and i want something fun and colourful, the kind of room that will cheer me up when I walk in there! :) Any ideas are appreciated, Thanks!