>>42172001I find it difficult to make really big maps due to my desire to detail an area more than the baseline texture level.
I really have no idea how people like skillsaw managed ancient aliens and similar shit, boggles the mind.
Also I generally sketch out a map physically and come up with a general theme, nothing specific it's usually just "spacemap" or in the case of my 3-map project: "prison-canyon-meat factory/temple".
picrel is my factory/temple sketch