My aim, to cut off everything that doesn't look like wingtip. If it still looks horrible before it is vestigial I'll try again.
Cut it all back a bit, and it looked better.
Marked it up with some sweepback like Berkut 13, but it still looks horrible.
Tried marking it up with symetrical rounding fore and aft, and it looks better. Make a paper template and rough it out. Looks OK, and the span is now similar to plans. I've cut into the 1" section near the max thickness point. Whatever.