I've seen Laserbits and another one has sheets of 12" x 24" and no other sizes. I'm looking for colored sheets to engrave photos and make signs. They have precut shapes which are small, but not what I need. I need picture sizes like 5" x 7", 6" x 9", 8" x 10", and maybe 10" x 12". Don't tell me I need to cut it myself because I can't even cut paper very neatly. There's got to be someone that sells these...anyone?

If not, then how the heck do you cut these and make them come out nice? Don't the edges bend when you use shears?