On the monokote, Dont worry it isnt too hard if you just take your time. Heres some tips that work for me.

1. When starting to cover a part, set everything up so that you have as few edges exposed for the wind to peel back as possible. What Im saying is the piece closest to the front should overlap the piece closest to the back.
2. Cover the bottom and then cover the top, so that you laps and cutoffs are on the bottom side when possible.. When you cover the wing and stabs cover the bottom and then on the leading edge lap the top piece over far enough so that the edge is faciing back, or at least straight down, never cutoff an edge so the wind can peel it back.


Use an iron to get it started, I actually do complete airplanes with an iron. When covering the large surfaces without compound curves like the side of the fuse or the top,bottom of the wing.
A. Lay your piece out and with the lowest heat possible that will just make the adhesive stick, go over the entire surface, start in the middle and work out and go slowly. Leave yourself an air outlet. Be sure you dont pull or stretch the monokote when you are on a flat surface. It should be taunt, just barely be stuck down and have no significant wrinkles. On the end of the wing where you have a tapered wingtip just leave the covering hanging out there you can deal with it later.
B. Then once you have everything laid on nice and flat with low heat increase the heat to about 3/4 of the scale of the iron, and slooowly go over the outside edges and seal them down. You want the iron just hot enough so that it discolors the monokote a little and not so hot that the monokote draws up or shrinks on the edges. Seal that edge out near the wingtip too, you are going to be pulling against it when you cover the tip.
C. Cut the heat back to just a bit hotter than it was when you originally laid the monokote down and let it cool. You need to go back over the surface and get it drum tight, use only just enough heat to get the job done. Start out too cool and ease the temp up until you can tighten the monokote,, get too hot and it will melt . you should be able to slowly move the iron across the surface and see the monokote come out of the backside of the iron tight. If it wont get tight ease the heat up, eventually it will tighten it up. Takes practice but it isnt hard.
D. For covering compound curves like the wingtips or the fillets around the curves you will have to stretch the monokote. I can do it but I struggle so Im not going to give you any advice there. There shouldnt be any compound curves on an LT 40 anyways except the wingtips. If no one else chimes in just get the iron fairly hot and start in the middle of the wingtip, pull the monokote over the edge and work your way out with the iron. I have always had the monokote bend a little in 1 or 2 places so I just cut the bend and lap the front over the back. I do ok, but Im not a pro at compund curves.