Cute blocks. I'd switch Sam with the block in the upper left corner and the tree with the blue snails trail. That way, you'd have the "lighter" block on top and "weightier" blocks lower. I'd also sash the barn and then use narrower sashing around the rest of the blocks. I'd make a first border the same size as sashing around the barn and then wider border around that. Size would depend on how large you want the quilt.