It took me months to refine a level, because it needed a lot of terrain work, a lot of ground clutter to make it look like a natural outdoor setting, and there was also a lot of time spent putting in characters, entities, scripting, sound f/x etc.
I learned a lot along the way, found a lot of good folks here in the forum, I had lots of fun, and it's definitely worth the work.
I learned so much that I could rebuild a level 10 times faster, but building new levels from scratch takes a little bit of time, thought, planning, and re-working things.
I wish you all the best, Unspokenbond.