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https://www.flickr.com/photos/[email protected]/
https://www.flickr.com/photos/[email protected]/

The screenshots, please comment.

looks good, i would use a variety of trees though. delete some of them and use different styles of tree, it wil look much better

These tree's look actually really pretty, so i used them. Other tree's are much way difficut

Except the tree arrangement you have has absolutely no flow to it, and crowds the coaster too much. It's not realistic in the slightest.

but how do i to make it more realistic?

Update:
with 2 new attractions and the opening of the park. And switching to diffrent kind of tree's :P
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https://www.flickr.com/photos/[email protected]/

still has way too many trees. delete a lot of them, then pick 3-5 tree types (with different colours) and place them randomly. trees dont grow naturally in line, try not to have 2 tree directly next to eachother

I can delete all the trees and plese send me trees(names/cso) to me so i can put all the trees randomly
: D

Different colors are allways good, but its importent for the real look to pick the right one together.

As an example, i've seen some screens here on the forum were are orange and green tree colors used at the same time. That sounds like Autumn- and Springtime at the same time, thats not realistic.
So i think to use only different green types of trees for "Spring" and "Summer" and the yellow and orange types of trees/bushes for "Autumn".

I agree with the others, to much trees around the coaster. Tracks and pathways should have space to "breath", sounds funny, but it makes alot of differents in the ending look.
Additional to trees, shrubs and little flowers are growen up in nature or be placed in parks, so this art of vegetation should be placed, too

The rest is practice , safe often and try different ways out to change the look of your coaster.

Soo long, Cobra

I will use a few trees, discover the ground with shy guy's rocks and flowers.But i don't know wich flowers or rocks I must use,I prefer tiny bushes or flowers and a few big rocls and tiny rocks. But however: how do the coaster looks, is it realistic, do I used the supporting well?