Ok a small update, I realised I dont realy need to worry about the riverbed texture too much as it wont be seen, but will still try and figure it out (im probably missing somthing realy simple). I have added a river and changed some of the textures to get a more summery feel probably due to the lovely weather.

If anybody has any suggestions/changes to make or ways to improve the texturing please comment as I just want to learn as much as i can! (also dont mind sharing file for you to rip apart, just ask)

I have played around with the maya fur grass preset but not sure on how to get best result so any sugestions would be helpful