Hi Nik: You have done a great job. Good clean looking build.I would make the following suggestions.

(1) You can add a small piece of balsa to each side of the top of the fuselage to hide the fin and joint (verticle stab)
See attached picture. Makes covering easier and looks better.

(2) If you haven't already, install servos, battery etc. and laterally balance plane before covering.
I had to use 3/4 oz. to right wing to offset upright mounted OS .61 with muffler hanging out to left.

I look forward to hearing your flight report. Keep the progress pictures coming.