As you can see by the pattern transfer that there are a whole bunch of short straight lines. I was thinking of cutting the lines free hand with my swivel knife, but I did not want to screw them up. So, I busted out my clear ruler and used it to help me cut the lines. After cutting all of the lines in one direction, I took a glance to see how it turned out.
After feeling a bit of an accomplishment with the first side, I proceeded to the other side and cut the lines using my ruler.