That is so cute!
If you want the chickens to lay consistently inside the coop and not outside the coop - keep the hens inside the coop for a solid 2 weeks (no free-ranging) and they will get the idea that the coop is for laying eggs. It seems cruel but it works effectively. We had our chickens in the coop for 4 weeks when we first got them and they have never layed an egg outside a nestbox.
Thanks... Sadly the coop is way to small right now for anything but overnight... I've drawn up plans for a 4'x8' coop but my husband keeps procrastinating because bills are due this week ... So I went, salvaged a bunch of wood and now all he has to get is 4 2"x4"s for solid frame and the hinges for the doors and lift side for cleaning and egg collecting... Let's see if he gets them today lol....