Next I pulled out the mesh and spread it across the frame and pulled out the screen spline material.
I proceeded to insert the spline into the grooves that it was supposed to go into like so..
while using the screen application tool to push the spline into the groves as I went around the frame.
make sure the screen is taut as you go around.
After the screen was secured to the frame I cut off the excess screen material around the edges and finally ended up with this, my virtually see through aquarium screen cover.
Easy as pie! Well, except for maybe Pumpkin Cheesecake Pie because that actually sounds kind of difficult..