Welp I might as well give this challenge a go as I didn't last time. I have started the model, however I accidentally made it 19 cm long which is shorter than 8 inches but there isn't any rules in making your model smaller as it will still fit in the same box. Anyway I am rambling now so I will just start talking about my plan.   My plan is to make a 19 by 19 cm layout with three levels, A river in front, A bridge in the middle (it then opens back up a bit just to see the river again)