Hold on a sec, did you do the basics yet like keyword analysis, competitor research, market research etc?
If you are starting with a clean slate you should probably:
* Get your target keywords together,
* Hone in on your primaries,
* Do a thorough analysis of the first page ranking competitors (backlink analysis, likes/dislikes about what they are doing, etc),
* Build a site, create a blog with some quality content. Looks like you are a designer so create some posts that give back - how-to's on how to design a t-shirt or some shit like that,
* Generate 20-30 nice relevant posts on your own so you know they'll be tits,
* Get a content VA to start pumping out more articles,
* Get another SEO VA to create some web 2.0's, relevant community profiles that are properly backlinked with engagement (contribute with posts, comments, etc),
* Use a clean service for some directory submissions, social bookmarks, backlinks,
* Create the traditional social media sites - pintrest could be huge if you leverage some bombass photography of your products,
* Campaign on Stumbleupon, Google Content Network, maybe PPC
..and whatever else. I'm not claiming to be an expert either this is just off the top of my head and would be my first draft for a plan of attack.