I would cut the layer cake into 4 charms (quartered) and I would take the jelly roll, lay it out and frame the charms with the jelly roll strips (a different one from charm). It would take 4 jelly rolls and 1 layer cake to make this. It is a M*QC pattern. Jenny had an epiphany one night while sleeping and came up with this pattern. How cute is that? I'm making the twin size quilt from my jelly roll and charm pack from M*QC named Riley Blake designs "Scooter". This is for a crib quilt that will fit a twin bed when done with the crib. It will be nice and warm and big if mom needs to go outside (niece lives in Seattle). I'm anxious to get started but have to wait for my jelly roll. Talked to Alan (Jenny's son) and he is ordering a fabric that I want to use as backing that is part of this series. How nice is that? You might even find this site when you search the jelly roll tutorials. Good luck!!
Piece and blessings, Vicki