I took Elizabeth Hartman's Inspired Modern Quilts class on Craftsy, and I really recommend the class. She is a very good teacher -- her instructions are always clear, and I really appreciated her explanations of why she is using specific techniques (such as not making exaggeratedly wonky cuts) or making certain design choices. The quilts are wall-sized, but she also provides cutting instructions and fabric amounts for larger versions. (I think she calls them lap quilts, but the larger dimension is usually around 50".)
I sewed this quilt based on the "Wonky Crosses" unit of the class -- it's a little larger (36 x 36) than the one in the unit because it was a baby present for a friend.