Stamping on Fabric - need help please

[Mygypsytreasures]

I want to use some of that SU glimmery paint stuff from the holiday mini catalog (can't think of the real name of it off hand). It says it works on fabric. Has anyone tried it? I have some of the white that I want to stamp using the SU medalion stamp onto a 100% cotton Light yellow t shirt. I don't have a brayer. Any tips on how to get it spread onto the stamp evenly? Any tips at all?

Thanks from a newbie stamper!

[ccbooboo]

The inks are called Tsukineko All-Purpose Ink. I use a sponge dauber to apply to the stamps.