I have a dxf survey of a 12 acre site which I have imported into sketchup. To start using the survey as the base for my design work, I need someone to trace over all the contours and features. The house and garage should be modelled to a basic level - showing doors and windows in correct locations but doesn't have to be photo realistic. Contours should be shown as stepped layers, not sandbox. Trees to be added on separate layer. I can supply photos to help with modelling the buildings.