RE: Brent Good Custom Airframes 50cc Yak 54
Stab and rudder are out of the bag. You need to now cut your stock for the leading edge and trailing edge.
(On my plane I use 1/16" sheeting the kits that go out with 3/32" sheeting may need to cut the stock a little taller. Measure the Thickest part of the leading and trialing edge and cut you stock to that measurement.)
Both the stabs and the rudder use a peice of 1/2x1/2 for the trailing edge and a peice of 1/2x3/8 for the leading edge. I set up my bandsaw to rip the material out of the provided sheets. I use gorilla glue to attach the leadin and trailing edges. On the leading edge the 1/2" measurement is up and down and the 3/8 measurement is front and back. Spray a little water on the stock that has been cut to the correct thickness and length.
Use plenty of tape to hold the LE and TE in place while the glue foams up and cures.