Line up the bike
Spin the model with a finger, or jump to a view. Straight-on views give the cleanest outline.
Like shooting from far away with a long lens, so panel shapes stay true.
or
A straight-on photo of your bike or the wrap offcut works too. Stand a few metres back and hold the camera level.
3D model: DAYTONA TRIUMPH 675 by cgslab on Sketchfab