Reddit reviews Bosal #405 - Create-A-Pattern Tracing Interfacing - 5 yard roll

I use Swedish Tracing Paper or Bosal Create-A-Pattern. I usually have to modify the pattern, sometimes blending more than once size, so I trace off the parts I need and blend them with French curves. I do a rough pin fit.

If it needs more work, I make another pattern, if not, I transfer the markings to muslin and go through as many rounds of that as necessary.Then I transfer to fabric. If I'm happy with the finished pattern, I transfer it to oak tag paper and hang it on a pattern hook.

I transfer markings to the wrong side of fabric with tailor's chalk or a chalk pencil.