I used google's advanced search feature and put
gundamofficial.com in the domain section. I put
sticker in the regular seeach section. After I searched, I read everything through google's cache of the page. Here's what I gleaned:
1) The first thing you want to do is to trim the sticker so that there's no excess clear. Just the colour portion.
2) Then apply the sticker and gently rub it down very thoroughly.
3) Take a hair drying and heat the sticker up as much as you can without damaging the finish of the model
4) Put a heavier clear finish over the stickers than the rest of the model. Even it all up with a final coat of the glossy/satin/matte level of your choosing.
I'm not 100% sure what the stickers are made out of, but you may also want to try putting a bit of vinegar on it after it's in place and heated/melted with the hair dryer (if you bother doing that). It works for waterslide transfers, but it might work on the stickers as well.
You'll definitely want to test these out somehow before endagering your model.