hey there! i just had a dream of Yonder! walked through the whole thing, and i think the layout of your town is really neat. the placement of public works projects/buildings/houses gives your town a fun serendipitous feeling.
my favorite part of your town is the instrument holder area behind o'hares house, and i also like the overall placement of pathways and benches. one suggestion i have for improving your town would be: line more pathways with flowers and utilize patterns made out of bushes/trees/flowers. you have beautiful flower hybrids everywhere and i think they would be more effective if they were placed in a pattern or in a dedicated area
here are a few design ideas i had while exploring your town:
distinctive areas with borders made out of flower/bush/tree patterns are very aesthetically pleasing (like behind o'hares house and below the event plaza). they help provide a sense of order and direction!
where there are open fields or flowers/trees scattered about, that would be a perfect spot for a park. you can build a park, or other little areas like gardens/streets/hangout spots, with public works projects like benches and street lamps placed together, with flowers and such surrounding the perimeter. public works projects of the same theme are very cute when placed adjacent, and certain flower patterns along pathways really help bring out those themes which is fun to play around with.
also, more greenery would serve as a great addition to your wonderful town (like bamboo or different color bushes!) try to develop patterns and match different scenery using a separation of elements. you can create spaces with bright colors using white/pink/yellow flowers combined with fruit trees & sweet olive/azalea. likewise you can create areas with darker tones using black/blue/purple flowers contrasted with cedar trees & hydrangea bushes. to help establish harmony along pathways you can gather specific types/colors of flower and do patterns.
hope this gives you some ideas! loved the town and all the attention to detail! have a wonderful day