if you check out the regular purchased pattern for t-shirt quilts you will see that all of the blocks/logos are different sizes, that is what makes them unique. i suggest you 'square' up the pieces so you have even edges, iron on your interfacing (which is an important step using stretch knits) then decide what to add to each one individually to make them the size you want. such as log-cabin around this one, flying geese around that one, checkerboard here, on-point triangles there...see? one of the great things about t-shirt quilts is that you can 'play' and make it very individual.