Time to mold the LE sheeting.
I soak the sheeting in the bathtub using only hot water - no ammonia. While the sheet is soaking I lay out 2 strips of masking tape about 2 inches from each end of the sheet. These strips will be used to "locate" the sheet on the form. BTW, you really don't need a separate form. You can use the wing itself only after you've installed the TE. The balsa trailing edge will prevent the foam from collapsing from wrapping the sheeting to the foam. Do this before you shape the TE. This way if the wrapping does crush the wood TE slightly, it won't matter because you'll sand it away.
After the sheeting has soaked for about 20 to 30 minutes I remove it and scrape off the excess water with my fingers. Then I wipe it with some paper towels. I place the sheeting over the masking tape and position the mold form on the center line of the sheeting. I then wrap the sheeting, from the LE aft up onto the form. I then hold it in place with the masking tape. I do the root end first. Then I do the tip. Once satisfied with the placement of the sheeting on the form, I wrap the the whole thing tightly using strips of bed sheet about 3 inches wide (thanks Al Rabe for this tip). I use bed sheets instead of an ACE bandage because the bed sheets won't leave a weave pattern in the balsa wood like an ACE bandage does. I usually clamp 1 end of the strip to my workbench and the start winding on the form from the root end first. The wrapping is held in place with masking tape.
I then placed it into the oven set at 170 degrees to "bake". I usually just place it over a hot air register but in the new house they are all in the ceiling. I'll bake them for an hour or so.