Cutting the steel wasn't too difficult, but it was incredibly time consuming. Here's a tip, the bigger the spaceship, the easier it will be to cut. So pretty much, if you have a big piece of steel lying around, make the spaceships bigger. Focus on the ships one at a time, and pay close attention to detail. if you do a good job, you will basically think that you are looking at an arcade cabinet every time you look at your mobile.