This is one of my first tries at Terragen 2. Hope you enjoy it! :)
Welcome to the Forums. This is a nice start, with good clouds and lighting, and a believable grass colour. One question though - why "African", as there is nothing distinctively African in the scene?
Good cloud cover also. I like to pick a place and try to make the render look as close to the place as possible. It's one reason I have been doing, for me, local stuff lately. Maybe cbest knows Africa well.