1) Dont delete keep and place it again somewhere far in the timeline. Becouse it can cause a serious damage like: You place him in that location where are really near objects like: rocks, trees, hills, etc. Then Keep can not appear and you will have then bad game (without him).
2)Use arrows of Timeline to place buildings which you missed to place (important ones), like: Grannary, armory, marker, barracks, hovels, etc.
That can save them lifes, and they will not destroy buildings for grannary as you put it far end of the placement...
3) You managed to place bowmens/archers near water, outside castle. Not cool. Placed some not needable gather spots for rat like: swordmans, arabian archers, etc.
4) As i remmember he dont digs moat?