This is the pattern I used. I bought it at Keepsake this past summer. Gerri Richards wrote the pattern. The directions are quite easy to understand and plenty of illustrations help out also.
Using fusible fleece, you cut out the pattern and arrange strips that were cut from the charm squares. Each slipper has 2 halves.
Once trimmed, they are sewn together and lined.
Once top stitched, you match tabs and have the fronts overlap.