I did my bowties yesterday (front/back, tires, steering wheel).
Heres what I did,
1. Take a piece of paper and a pencil, and trace the outline of the bowtie.
2. Then cut a square or rectangle of the vinyl peice that will fit the bowtie.
You may want to trace it again on a piece of cardboard, if you want, but it is not needed. The cut out on paper will do.
3. Take an exacto knife, but with careful hand - a box cutter will do, and cut the outline out.
You do not even have to cut through the backing of the vinyl. Just enough to slice the vinyl, you can always just peel away the other parts that you cut.
4. Take the vinyl bowtie and stick it
This is definitely easy to do and I just wanted to document this somewhere. I will post pics as soon as I find a way to install my new seat covers (but thats for a different post!). Of course you can always paint them but this is just as good but not better. I have to redo my back bowtie, so I will try and video it and give you a tutorial for that. I was a newbie but after I tried a couple of times it came out slick. My front bowtie is perfect.
Remember
your vinyl will scratch, so keep extra pieces of vinyl. I found two 12x12 sheets on ebay for 4 dollars a piece.