It sounds like you’re best of just making adjustments rather than restarting all over.
Try Happy Island Designer by GitHub to play around designing a map you like. Don’t waste hours on it to get the exact looks of your town in each square (A1, A2, A3, ...), just get something similar and expand to see if you feel it’s nice or bad. I made a sketch in 1 minute of my town and played around with heights and rivers. Keep the houses and shops in mind though.
If you’re talking about missing like 2-3 lines of squares somewhere you might want to invite a friend over to see if he/she can think of something.
Calmness is the hallmark of those who are mighty