Directions:
The basic directions and tips to working with my stickers is found in the right hand column.  However, they all have a few special tips, and I'll break down the Snow Cat here.  When you get the sheet, don't just start cuttin' away.  Be methodical.  First of all, cut off the Snow Cat circles and the black box and set them aside.  Then, you want to get a straight edge you can see through (I use a clear plastic t-square) and cut down the two obvious columns and make the edges for most all the stickers in those columns all at once.  Don't press too hard, and you won't cut through the backer of the vinyl, and when you finish cutting, you'll be able to just fold them off.  Then just cut out all of them the short way.  You may want to cut all the way through when you go down the middle of the columns, as then you don't have to be careful while cutting each individual one out.  Put all of the ones in the columns on after you cut them out.  Cut out the Snow Cat circles best you can and apply.  You should cut them neat, but you don't need to be super-anal.  The edges of the vinyl become hard to see once you press them down.

For the black box, you want to take it off its backer and flip it over so you are looking at the sticky side.  Take a white sharpie (silver also works) and just carefully fill in the clear parts, and the "STEP".  What this does is prevents the sticker from appearing translucent in the black areas.  When you do them all, flip it back over onto the backer and cut them out.   I've matched the grey of the Snow Cat pretty closely, so once you apply them it will blend right in, and voila, you've got a clear vinyl decal that appears to be white and can apply to the dark bottom of the Snow Cat with no color loss.  This is easy to do, allows me to keep these stickers quite inexpensive, and looks great.