I like the organization, and the room in general. but I think white for an arts & crafts room is a TERRIBLE idea. unless this is before you started arting and crafting the room!
Clean up your sewing room. How to Make a Giant Peg Board for organizing a sewing and craft space.
use two shelves from one of those wire shelving units and zip tie empty thread spools in all four corners and the middle. Awesome idea for wall storage! I have a ton of empty thread spools I've been trying to think what to do with!