Sounds like you're doing well with the progress.
For posting pics, go to www.photobucket.com - free and relatively unlimited.
The biggest screw up in any home built pool project WILL be the timeline for building the pool - I thought my pool would get set up in one weekend, weather got in the way and postponed the job for over a week, in total, I probably spent 3 days at it including levelling and compacting screenings and sand as well as the entire pool build right up to filling.
Electrical and proper plumbing was one more day, finishing the entire area around the pool for no maintenance - 3 years!