PLEASE remember that the Manufactures of these blank WATERTRANSFER sheets recommend a clear spray of their own prior to install. It`s best to use it after trimming the decals to size so the edges get done at the same time...

.You can also use that template method on quality masking tape, by cutting your shape out and then place it on the plane(wherever).. Make all your "masks" for every white back ground you need ,,1 for each spot...This way you can spray-bomb ,or air brush or ,whichever method you prefer,All at once.I like to get these types of details out of the way and just mask off everything I don`t want paint on and just get it done.I normally use automotive basecoat/clearcoat systems and paint the entire plane .So when I do this, I use my lightest colors first,being white in this case.How I go about this is:

.(1) Find ALL my decal positions, spot spray those areas, only where the white will be.NO masking tape or you`ll have an unwanted edge later(not entire plane) let it FOG OUT...
.(2) Cut the "masks" needed on masking tape,except I use the "inside" of the shape to cover exactly the spot where the water transfer will go so after your main color is applied and your satisfied with the coat(no see throughs) and its dry,(15-20 mins.with the base coat) you can peel your masks off carefully......
.(3) INSTALL your water transfers everywhere they are going to be,and then paper towel them dry.....
.(4) I then give 2 very light mist coats on the watertransfers only with aprox. 15 mins. between dusting coats..It does 2 things(a) provides a barrier that won`t let the colors on the transfer from bleeding into each other;(b) levels up the height difference between colors.Meaning the masked edge................
.(5) clear coat everything till your satisfied.I normally get away with 1 medium wet cross coat( keeps the weight down) and end up with a decal that`s permanently fuel proof, and damage resistant ,with NO EDGE that can be felt..........
Hope this helps you all.Let me know if I wasn`t clear enough ,and I`ll elaborate further.These methods will give profesional results...DAVE B.