In the foilage tool properties you can find a min. scale and a . scale -> change the values to get a good variation 
oh ok thanks
Your first pictureception rocks 
The Paint Density slider also can help adding some variation if you change its value once a while when painting.
Thank you
The only thing that you have to do is to set your quality settings to epic + then, depending on your trees, you could also add some colour variation (you can use the speedtree colour node or create your own colour variation: ?v=cp6JQVHWeEw)
where are the quality settings?
Click on the “settings” button (the upper bar beside “Marketplace”) - scalability - set it to epic
Can i have the ground look realistic like the trees?
Just use good ground textures + materials -> take a look at the ones from the kite demo or the starter content
Thank you. This is the funniest thing I have seen in a long time.
I wasn’t aware that you could have it save them, this will save me lots of time now that I won’t be in Photoshop editing & cropping all of my pictures.
Build your light or use dynamic lights + add some grass meshes
Where are the grass meshes?
Where are the grass meshes?
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Either create your own ones, use the ones from the kite demo or download my free vegetation package