Before:

I printed out her name.

Put a piece of wax paper over the name and traced with a Sharpie.

Pinned the wax paper to the backpack.

Started stitching. I used "old faithful", the split stitch.

I noticed that it helped to move the left pin over as I completed each letter. It helped stabilize the wax paper in the middle.
Tear away the wax paper. It tore away very easily. I used tweezers to get any bits of paper that were stuck.
The end result:











