I also love tees! Medyo marami rin sub-categories yang t-shirt business. Puede ka:
1) t-shirt (garment) manufacturer
2) t-shirt reseller (wholesaler or retailer in a mall)
3) t-shirt designer, especially yung mga magagaling na graphic artists
4) t-shirt printer (screen printer) or in a more general term, t-shirt decorator
Exciting ngayon pumasok dito kasi merong mga new technologies ng shirt decoration (imprinting) na puedeng gamitin. Of corse, andyan na yung tried and tested screenprinting, embroidery, etc. The new technologies involves heat transfer printing and even Direct to Garment (DTG) printing. Maganda, start as a hobby lang muna, make good designs using Photoshop, Illustrator or CorelDraw, then buy a heat press so you can make your own shirts. Sarap ng feeling na ang shirt na suot mo, ikaw ang nagdesign o nag print.
Nakita ko nga mga designs ni sir JunDogg, ...astig, galing!
p.s. there's a foum in the internet,
www.t-shirtforums.com, lots of info there regarding the t-shirt industry.