A small stamp set doesn't have to be limiting. Use those tiny stamps that are included in the set as a background! The panel was started by scoring every 1/2" down. This comes in handy when designing the space around your image. Here I've used the tiny heart stamps to fill in the "sky" above the pup from So Fetching coloring them in with R14, R24, and R29 Copic markers.
Another tip is to look to other sets for sentiments that may "change up" the smaller set. For instance here.....the sentiments that are included with So Fetching are small so I looked to the Banner Celebrations set for a sentiment that was larger that would coordinate. I've white heat embossed the sentiment onto a strip of red cardstock and added the pup from So Fetching with foam adhesive.