So I'm thinking about entering this challenge, but . . .

The idea I have in mind would require changing the size of parts of a building/silhouette, and I'm not sure if that would be allowed within the constraints of the challenge. The other thing that struck me is the whole

Ideally you will end up with a detailed plan within the map you did for the previous challenge, and of course everyone else's map should also fit a floorplan of your town map, so everyone get's a load of useful maps at the end of the day.
I'm sure I must be interpreting that wrong, but it sounds very much as if we can't enter this challenge unless we participated in the previous challenge. If that's not the case, it might be a good idea to find a better way to word that part so that potential participants aren't put off.

GW