From what evansd2 is showing, it is very different than I had imagined. A ranked array of daises is a pattern, but then so is the cut-out lines of a piece of clothing and it is apparently the latter you are looking at. 
I think of Inkscape and Gimp as like two halves of a single program. One deals easily with rasters and the other deals with vectors and between the two is especially interesting 
Here are a few places to look
Using Gimp to get a better trace in Inkscape - Glowforge Tips and Tricks - Glowforge Owners Forum
Inkscape trace in Gimp 
- Everything Else - Glowforge Owners Forum
Doing the offset thing in Gimp - Glowforge Tips and Tricks - Glowforge Owners Forum
3d Engraving help - Problems and Support - Glowforge Owners Forum