grog,
I don't want this to sound abrupt or rude or anything, but just want to tip you that a WHOLE lot of advice has already been posted on laminating fins.
Go to the top of the TRF page and click on the 'Search' button. Use some keywords like laminating, balsa, paper (you get the idea) and you will have enough reading material for a month.
My favorite way to laminate is to sand the fin first (and we ALL sand the leading edge round, don't we?), fold a piece of paper to fit around the fin leading edge, wipe both sides of the fin with watered-down Elmers, and slip the paper onto both sides (I leave the paper cut oversize so it extends beyond the tip, root, and trailing edge). Sandwich it in some waxed paper and place under a pile of phone books or magazines for a day. Then pull it out, trim the excess paper with an X-acto, scuff sand the paper (so the primer will stick) and proceed with assembly.