Fiberglass work was actually pretty interesting and fun. I was a little bit afraid of how it was going to work, but I feel the results are good. I started by trimming the horizontal stabilizer tips and filling the rear part of them. Now after it is done, I feel I could have created a narrower gap between the tips and elevators.
Fitting the elevator and rudder tips was pretty simple. I used my heat gun to adjust them on some places, and a little bit more may be required once all parts come together on the airplane as I saw some minor misalignment once I riveted them in place.
The last piece I worked on was the rudder bottom piece. I decided to go with the flyleds DIY nav/led/landing lights kit. As a result I just bought the tailight/ strobe and fitted it in place. I also used epoxy to secure the support inside the fairing. The last thing I did was add extra fabric and epoxy inside at the join line between the too halves of each fiberglass tip fairing for a little more support.
The final result: