I'm brand new to the world of 3d modelling. I downloaded Google sketch up earlier today and have spent the afternoon fiddling around with it. I want to create some buildings and other scenic assets for my WIP route, 'Through limestone hills'. I'm finding Sketch up surprisingly user friendly, but need a couple of queries answering. Firstly, is sketch up compatibly with RW? Ie, if I create something with it, will I then be able to load it into the assets file of my RW route? Secondly, is sketch up a 'complete program'? Ie, could I create an item and texture it to a standard suitable for RW, or would I need another programme to do that?
This is the result of an afternoon's fiddling. The signature fan window at Buxton station.

And the real thing by comparison

Comments and advice welcome.
Cheers, James