The only part left to do on the wing was to shape the tips. I grabbed my 60 grit sanding bar and went to work on the top half of the right wing tip. It took about 15 minutes to get the shape correct and looking good - that was the easy part. The hard part is making the other 3 wingtip halves identical.
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I measured 7.5" up from the trailing edge and used my contour tool to copy the shape of the wingtip. I picked 7.5" because that is the highest contour on the wingtip and figured if I can get that right then I could fair the rest of the tip. On every new wintip I made a mark and began sanding perpendicular to the tip, slowly working my way until that one contour matched the tool. After that, it was easy to sand down the rest of the tip.