My 4yo loves drawing and writing, he is forever making signs and drawing trains, making maps etc. I know it sounds a bit daft, but I am getting a bit unnerved about the way he draws. He will draw a train or a building and then literally fill it with lots and lots of windows - little even squares. He drew an "8-deck train" this morning that was so full of these tiny squares, it took him ages. He then did about 10 little chimneys on the top and did identical curls of smoke coming from each one. He also drew a huge very detailed map of a city we recently visited, from memory, including things like post boxes, and palm trees on the seafront, and tartan-backed chairs at a cafe where we stopped for coffee.
Am I being silly? It's just that there is something very obsessional about the way he does this, and the drawings are getting more formulaic and complex. I can't put my finger on why it bothers me.