he is not trying to be mean he is just trying to help you so that your park can look really good. Anyway, i think it is a good start, but you need to add more buildings to the entrance area. They do not even have to have anything in them, but it makes your park look loads better. You should add a lot more trees and landscaping here is picture of what one of my parks looks like. Ithink the park looks pretty good though, keep working at it!!
you do not have to go this far into detail but lust a creek or something like that would enhance your park