Big Cartel e commerce website help

Need help w/ web design and graphics… Its a bigcartel site I need help with (e commerce shopping cart) store. I dont know enough about web design to make the site look nice. I have an Interior Design business, and want to start selling my accessories online. I dont want it to be extravagant, just linked up to Paypal , shipping options, category options, facebook “like” my fan page and a nice clean design. I want it to look glam.. classy and elegant, with pink , black, and white colors. “Garamond” font, and an image. I know everything that I want, just dont know how to express it and all of the different CSS commands, coding and such. the site is already set up, i just need someone to help me make it visually appealing.