this was a lot of fun, learned a lot from this
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when mirroring and moving the object together to clip if you over shoot it don’t just move them apart and set, undo the move and go again because by the time I realized I had stuck every edge together I couldn’t just go back.
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Don’t make markings too distinctive (like the left hand door scratches) unless its a one off door/pillar because it gets really obvious its a repeated object.
3 you can increase the number of undo’s you have by going to edit/preferences/system and move undo steps from 32 to a maximum of 256 
