how can you make a google skech up into a model and not a drawing
Assuming you know what you're doing with Sketchup, you'd export it as a 3D model, Collada (DAE) specifically. If you don't have that option, export it as KMZ. KMZ is actually a ZIP file. Change the extension to .zip and open it. Therein you will find the dae and texture files. Drop these into Assets or some folder under Assets.