Step 3: Cutting the Shirts
You will be amazed how this step whittles down your pile of T-shirts to a manageable size and allows you to get a better idea of the various dimensions of your T-shirt "designs". Start to notice and separate into piles those "designs" that are of common dimensions. Big, wide prints into one pile, narrow and long into another, small pocket prints together... inevitably you will still divide these piles further based on true measurements, but for now just start organizing. The number of T-shirt quilt blocks available will be the primary factor in determining the final dimensions of your quilt.
When all your T-shirts are cut into "rough" blocks and organized by size, consider what you actually have...you will need to create complete vertical strips of the same width that travel the desired length and width of your envisioned finished T-shirt quilt. Blocks with designs of large dimensions cannot be made smaller without loosing some of the design. But, smaller design areas can be made into larger blocks by allowing more material to encircle the design.