[I started a new park and need some suggestions]

So I started a new park and I feel that I need suggestions and some critique about it, so here are some screencaps I took of it:

 

The town of red houses is not part of the park as well as the parking lot, this is a custom scenario I made.

There is a sort of main street, a ferris wheel, a repainted "Tornado" coaster that was renamed to "Twister", a slide, and custom ride that is a mod. I will also try to update the progression of the park with more screencaps and other things I deem necessary.

[How do you make slanted fences for roofs?]

I have seen many creations that had slanted fences next roofs and I always wanted to find out how people did it, any tips or instruction on how to do it?