A number of years ago I was in a tying course learning to tie (upright) wings for mayflies. The tool employed to shape the wings was a set of toenail clippers. The feathers for the wings were tied in and lifted together vertically. The front edges were snipped parallel to the stem (but had a nice curve because of the clippers). Then the backside was clipped at about 45 degrees toward the tips, then the tips were cut off. The advantage - aside from a well shaped and sized wing, is that almost any feather can be used, in fact ones that are a little long make them easy to hold. It would be easy enough to squashe the wings flat and continue with the post and parachute after they wings were shaped.
And you don't need the fuss of making wing burners or making them in different sizes. Just make sure you get nice new sharp clippers - go top shelf, get the $5 ones!