If you can go to the island, it's easy to get flowers for the tour, and boom! You're on your way to having a more peaceful town full of flowers.
Also try planting more trees and bushes(that you like), symmetry and rules of thirds, work great for trees and bushes. Odd numbers...
ie
1 tree + 2 bushes = 3
TB
B
2 trees + 3 bushes = 5
TFTFT
FFFFF
TBBBT
3 trees maybe a crowd but it makes your town look fuller than just having 2.
Plant in a V pattern if that makes sense, it give the illusion of a forest grown town.
Again odd numbers.... two trees at the front, both a space away, then leave a space and plant three trees behind them.
ie
TFTFT
FFFFF
FTFTF
LOL I dunno hopefully these help.
