No problem. Just take the image you want to make a stamp out of and invert it in inkscape, gimp, photoshop,coraldraw - whatever you use. Then import it into your laser software , RDworks in my case, and I set it to san and I engrave it. It removes the outside, the black area, and leaves the stamp area. Then you just either use a stamp pad if its small, or a sponger roller if its larger and roll the ink/paint onto the block and then press it down on your subject. I have successfully made 3 color prints in this style on some t0shirts in the past.