Well, is not than easy xD. First, u must specify wat format is (3dstudio, sketchup, blender, etc) cuz not all 3d modelling programs can use all the 3d model files. Second, wath render engine u used, so if we are lucky and have the same render engine, we can make a closer top view render of the isometric view (that is awesome by the way). Third, if the textures u used are the ones that the original author left in the model or u just added textures (in that case u will need to add the textures to the file too so we can use em).
After all of this, since is too hard to make good top views render (u will need to be a expert render user) we can only just make render top views changing some parameters, but since i am not a pro 3d model renderer and u Randy are far far better render user than me (i dont understand y u dont make the top view render, since u are almost a pro renderer xD) y not u keep making the top view renders?
I have all the 3d models required, i mean (the city, aurora, destiny, jumper, advanced jumper, destiny’s shuttle, another ships that i cant even remember the name, etc). The problem is we need to texture em, and in high polygon models, that is complicated (a lot of time is required). But we can get top views of all of em. But lets get started with the aurora class…
BTW, i think the aurora model i have is less detailed than that one.
EDIT: LOL, yea i looked into it and the aurora i have is crap compared with the model u posted, heres a quick top view render xd: