I know I made some blunders in the course of this game... read the annotations to see where I feel I made some stupid moves. Any further analysis on possible better moves, help in showing what could have been done better, etc., would be greatly appreciated.

why not advance passed pawn to promote at end? you get the bishop traded for it at least

If a passed pawn/bishop trade is induced I will lose at LEAST one of my two pawns behind, leading to (at best) another draw or (more likely) a loss as White would capture, then be two pawns to one and be in position to promote.

8.. Nd7 then 9...Qc7 wins the pawn.

remember, a theme in sicilian as black is to take control of c file with rook, so that knight move to b4 was premature.

that draw was forced at the end - good play with king repetition.

Well, I had a pretty entertaining time of it trying to figure out how to win the position after Black's 51st move.  There are a few pitfalls, but it looks like White could do it thusly: