Spooky Eyes is a fun 6x8 pattern which whill turn out quite nicely for a mugrug. You can see a stitchout in a mugrug of this design here.
http://www.seamstobesew.com/?p=7594
No instruction is in the pdf file to create a mugrug, this is simply the pattern itself to allow you to add to a mugrug size.
Artwork by JW Illustrations
Pattern Created by Seams To Be Sew / Marian Pena