First off, I love craftster! It so inspirational!
I've had a lot of fun making fake screen-printing. I say fake because I don't use the photo-emulsion. But I do use silk screen. There are some great online tutorials for this, such as this one:http://community.livejournal.com/craftgrrl/3674467.html
The basic idea is this - print out an image you want to screen print (from a photo you turn into back / white for high contrast, or letters, basically I print it 'cause I can't freehand things). Then you put some silk screen into a plastic embroidery hoop. You tape the paper to the screen and trace the image with a pen onto the silk screen. Then remove the paper part. Now you very carefully paint water-resistent glue (Mod-Podge) everywhere you don't want the ink to go. Once that's tried, you then put it over the shirt you want to screen print (put paper under the fabric so it doesn't soak through to the back. Then I typically gently brush on the ink (I used Speedball fabric screen printing ink). Then I firmly press the ink through the a firm spatula in one left-to-right stroke. Then you're done! Rinse off the silk screen promptly and you can use it over many times. The ink has to be ironed to be set.
The last shirt I did some simple embroidery around. I didn't use interfacing on the back, but next time I will because shirts have too much give!
Thanks for looking