There’s a seam line on both the canopy and the rear window, which needs to be taken care of. I found out how to do it on Phil Flory’s Youtube channel.
The first thing to do is to put blue tac or clay inside the canopy to prevent it from breaking.
Then I started with the course side of a nail sander/polisher and carefully sanded down the seam line.
Then I used a sanding sponge to take out the scratches from the sander, also wetting it a bit while sanding.
Next step is to use a polishing stick also with a bit moist, and do circular motions and lastly finish it off with the smoothest stick polishing the last bit. I you have you can also use some polishing compound. Something I intend to get!
I tried on the rear glass first, just to see how it worked.

Here’s a pic of the canopy with the seam line visible.

After doing the steps mentioned above, it looked like this!

I am quite happy with that, but I still opted for a little dip in Pledge.

Lastly i just tried them on the plane!

I can’t see there ever was a seam line, so I’m happy! 🙂