Right, so firstly, I think you should add something next to the police station in spot 1
(yes I just took a photo of your town on my phone and drew over it with paint). I think the caf? would look lovely there and fill that empty place. Secondly, I think something small like the stone tablet would look nice in that 5x5 bit of trees below Marshal's house to give it a mythical sort of feel, as I get fantasy vibes from your town.
Also, the clearing behind the placement you have your caf? in now could be converted into a park using a fountain and the metal bench or putting the picnic basket there could turn it into a beach-y spot, as it's close to the cliff and you can hear the waves. Alternatively, you could put a picnic spot at the southern ramp that overlooks the ramp.
Finally, I think organising your flowers into fields could be a nice touch. Maybe that's just my preference, but if you have large empty spots, you could just fill it with coloured hybrids. (for example a pink rose field or an orange pansy field. I'm creating a rainbow tulip field lol) It can really give the appearance that there's stuff there when there's not and can help to make your town more scenic. Overall I like what you've done with your town, it's nice and cute!
Hope this helps!