[Tomboeg]

Hey there.

I was wondering, i'm mapping for a while now using MTA and pretty skilled but i was wondering.
How do you map a (new) interior. Something unique that doesn't exist already.
I've never used or tried this before so i was wondering if anyone could give me some hints or tips.

Basically, i guess i go up somewhere up in the sky and then start off by an airportroad upsidedown or something?
Any good objects or ideas suggested?

Thanks,