Silkscreened shirts

I made a new silkscreen of a nearly identical crow this week.  Today I silkscreened them on to my remaining tee shirts. I think I have a lot of tee shirts.  After this, I was supposed to iron them for 3-5 minutes on each side to set the ink.  This ended up kind of scorching the fabric.  Instead, I put them in the craft oven at about 275 for ten minutes. Still smelled a little scorched (like a high-heat dryer) but I hope it set the ink.