Any Suggestions on my new bedroom?

I moved to a new house recently and I've been staying in the spare room ever since. I saw my new room and it's a pretty big room. I already have a design for it which I got off the website HGTV and I planned out how it's going to be. I need ur suggestions for my room on:

-the pillars I have three in my room like randomly spread what should I do with them one I know I'll put a schedule thing and a notice board with pics what should I do about the other 2

-are there any stores that sell cute apartment stuff like Urban Outfitters.

Thank you!

PS: if u have any suggestions about furniture like desks or chairs, my colour scheme is black and white mainly. Here is a link to my plan : it's pic number 3 press next until the 3rd one http://www.hgtv.com/kids-rooms/8-chic-bedrooms-for...