Hello Joe. It depends on what decal you use. I have used in some instances, 1/144 decals such as stripes and some of the aircraft doors and trimmed them, alot of work though! Such stripes as from liveries as American, Eastern, Delta and some others I can't remember. The exceptions are windows for the most part, however, I've found that the titles for smaller aircraft such as the 737 or 757 for example in 1/144 would work well for a 1/200 767 or 777. What type of models did you want to work on? Good luck!