I love this quilt and am working on a design for a Lego quilt also. I wasn't sure how you did the actual Lego blocks. Are the circles done individually and appliqued to the block? Are the ends and sides of each block done in a slightly different color to create the 3D effect? Great quilt. I am doing one with the blocks similar to yours and a Lego man appliqued in the middle.
Thanks.