Lilly utilizes an array of techniques to create her colorful glass art. From building a back ground scene by pouring crushed glass in layers into a glass frame, to layering one color or many different colors on top of each other to create a bright and bold design. Most often, any individual work represents multiple techniques as well as expertise in glass compatibility, gravity, temperature control, color placement, and reaction.  The glass is first fired in a kiln to about 1500 degrees F to melting or fusing point. Sometimes multiple firings are needed to create a shape. The glass can be in the kiln for several days before finishing.

Almost entirely self-taught in fused glass, Lilly has attended workshops with Laurie Spray, and David Alcala and studied Stained Glass art with Jan McLane.