Print-making is a form of art where you carve a design into something like cardboard,) only enough to leave dents in it though, not enough to break through the material) then you take a paint roller (small) and roll pain on the design. Then, before it dries, stamp the piece onto paper, or anything really. now, you can re-use the design and make stamps or your choosing.
You'll have to find a file converter, there are many found online that you can automatically access online, or will have to add as extension or download. You can typically find them on google.
