Many "patches" are shells for keyloggers or viruses that can steal personal data.
It uses an avatar of your actual body measurements to scale the 3D files automatically before unfolding.
It automatically unfolds your mesh, identifies tabs, and allows you to scale the model precisely.
Enable the "Import-Export: Export Paper Model" add-on in the Preferences menu.
If you prefer Google Sketchup for modeling, Flattery is a classic plugin that "flattens" faces onto a 2D plane.