Bet you are familiar with the Stitches for Effect books. Did you know the authors (Suzanne Howren and Beth Robertson) also sell painted canvases, most of which come with stitch guides? Their company name is Shear Creations. They specialize in small designs with large empty spaces, perfect for embellishment.
UPDATE: Pocket Full of Stitches posted photos of many Shear Creations canvases on their as part of a trunk show in the shop. Since many of the photos show the stitched versions which have guides, I thought I would add the links here. Enjoy!