Odd'l Rockets Goony G-16 Build, Part 6, Canopy

Here's how the canopy looks from the Odd'l F-16 kit.
You have to trim and sand the bottom to best fit the curvature of the nose cone. It's not as hard as it sounds.

Along the bottom of the canopy is a edge recess.
To see the line you will cut, a ballpoint pen line is drawn down the recess.
Right above the pen is a squiggly line on the cardboard. The plastic is slippery and you may have to "start" the ink a few times while tracing around the clear plastic.

Don't cut all the way through the plastic. SCORE the plastic with a sharp knife. The plastic will crack down the scored line by flexing on either side of the cut line. Don't flex the scored line yet.
Score a line all the way around the canopy. Relax and TAKE YOUR TIME!

On the corners cut a line from the scored edge to the outside of the clear piece. Here you do cut all the way through the plastic.
This makes it easier to flex and crack the scored lines in four segments all the way around the four sides.