What is the best method for cutting out a canopy? I have a stuka (Hobby-lobby) and I have to cut out window holes in the black canopy and then glue them it the outside of a clear plastic canoppy si it looks like the black bars holding the glass in the canopy.. Sissors dont work as I need to cut out the squares in the black canopy and with a knife if I push hard enough to get through the canopy it wants to plunge in too far and makes a mess of the entire thing. [:@]Any suggestion as to what to use that wont make me order a new canopy and try it all over again???

BTW am new to this site and so far have found a ton of very helpfull things for a very new RC'r..(one month in and I am afraid I am committed for life!!!!!!!!)