I found this very helpful but at the beginning you said that you could use any kind of decal paper. Im guessing that after printing I just need to cut the decal out correct and stick it on? also is it necessary to have a laser printer?
I do not have a laser printer, and I can still print decals at a fairly good quality level, so I do not think it is necessary. What you need is a reasonably good printer and some time to experiment with the settings to find the best combinations for high quality results.