I always wash the tee's when they are brought to me...even if they are old and already washed..I wash then with sythropol to get the DIRT off of them...and any pet dander, etc. Then I lay out the tee's and take a pix of them..upload to the computer and then print it off in black and white...this helps you get a really perspective as to how they will all look together...you might have to play with this a few times...now, NUMBER each shirt by stapling a sticky to the collar area....then turn inside out and iron French fuse interfacing to the section you wish to cut! Now cut, stay stitch and square up...you are good to go now!