I like it - the log cabin is fun to piece - I made one and cut all my fabrics then did the speed sewing - just feeding one after the other into my machine - I think cutting took longer than anything. The fun is there are so many ways to arrange the blocks - it can change the whole look.
I really had to concentrate to figure out what you did (wrong - your words) - its so subtle I bet no one would notice but you. Its beautiful and your friend is lucky to have you and your talent. Keep on going...