This is the way we ourselves install motocross graphics. It's a slightly different method than the instruction sheet that comes with our graphics. Read "all" of these steps and watch the video.
Take off the seat & put the sideplate bolts back in loosely... Graphics are easier to install with the plastic still on the bike. With a clean rag & some lacquer thinner, clean the plastic really good... Carb or brake cleaner work well too & so does acetone. Get a new clean rag & lacquer thinner & clean the plastic again... New plastic needs to be cleaned even more than old plastic. note: the oils and silicones on new plastic will guarantee the decals just fall off if not cleaned properly. Have a look at our installion video in the link below... pause it if necessary.
http://www.youtube.com/watch?v=M-ZOTt2Ncew
Install these ones first... front plate, front fender, swingarms, fork guards then the rear fender. Next, do the shrouds (if the shroud is two decals, install the larger part first) Install the left plate & then the right plate (its the hardest one... all the others were practice for this moment) Finally, install the airbox decals, be careful to line up the graphic to the larger sideplate portion already installed.
Stretching the decal in some areas is necessary... so don't do the water trick people talk about, it will just take forever to dry. If its crooked or you get bubbles, just quickly pull back that area & continue the application. When it's all installed and looking good, get a heat gun or hair dryer then heat it up while rubbing everything down. Our 20mil thick graphics require a little more heat to soften & adhere than our 16mil product does. Don't heat it up too much... put your hand near where you're heating... if it's too hot for your hand, its too hot for the graphics.