Love the bright colors and the RR crossing, depot on the fabric...perfect fabric, perfect block one more time. It is amazing what kids remember their lifetime..the four year old may well remember your sewing his whole lifetime...and he may in turn, sew some day. Our gs is four, but I could not keep him by himself...much too active and interrupts adults too much...and is spoiled by his parents who does things his way, not their way.