Tips wanted...

A young mom asked me to show her how to make a quilt from her teenage daughter's beloved pajamas she had when she was little. She wanted to include those beloved blankets too. So we started out with a sketch, and this week got the blankets sewn together, but not trimmed on the outside edges. She pinned the pjs to this background. It will have some borders and be about a twin size.

Our plan is to cut the back of each pj top and bottom off, as in all the parts that do not need to be there, then applique the visible parts in place. We are having a lot of fun and the results so far are just adorable. However, she has little sewing experience and has never made a quilt. I am also 'winging' it on this one. 

The blankets are somewhat stretchy so we hope quilting will help, but the fabric is firmly woven. The borders will definitely not be stretchy! Two pjs are knits and the other two are woven.

Has anyone ever made or even seen anything like this? If so, directions, tips, advice, etc. would be so appreciated!