Same as firewhatfire showed me,and if u use cans you need to sand all the color away,then sand both sides,firewhatfire showed me it was easer to sand the whole sheet on bothsides or the coke can before you cut them that way you wont have the 4 little corners to catch you,you can easly use a magic marker to mark out what size you need to cut, it sure helped me on my scallops