first of all, i tend to not like big art on t-shirt, i like it discreet and small...
second, what is it all about? i know it don't need to be an ironic theme, but it got to have some story behind it, not only patterns
anyways... if this is what you want, i suggest you to work more on the patterns on each cell, they look kinda dull when looking to the composition as a whole, and try giving some soul to it, like some story behind or something
You have something here, but as already said you have to concentrate on the individual cells, make everyone special not just the first random pattern that comes to mind, some of the patterns don't fit in they cut off abruptly
maybe adjust the design to be coming from the shoulder & not the armpit? Then it could be smaller at the top & gradually get bigger as it heads to the bottom. That might "lighten" up the shape a bit.
Maybe make them look more like patterned fabric (patchwork) instead of just a grid with shapes. Try adding color...can't wait to see V2 :)
second, what is it all about? i know it don't need to be an ironic theme, but it got to have some story behind it, not only patterns
anyways... if this is what you want, i suggest you to work more on the patterns on each cell, they look kinda dull when looking to the composition as a whole, and try giving some soul to it, like some story behind or something
keep rockin!