Once the initial schematic design is complete you can go through and add textures and fixings to fill up space and detect the rooms that need modifying and adjustments.
Do not spend too much time modeling the kitchen, the objective is to create a simple simulation of how the kitchen would be played out not every detail like trim, hinges, and knobs.
You want it simple so you can make fast changes as you go over the design with your client.
Use simple boxes to represent drawers and cupboards and subdivide them with horizontal lines to separate them from each other. The counter is done slightly differently, create a group aside from the rest of the rest of the kitchen unit and make it one object and paint it with the countertop texture of your choosing.
It's important to include these things to represent the furniture needed to fill each space and the flow of the house. The furniture should not be things you are modeling manually. Just grab them from the SketchUp warehouse.
Once your interior is complete for the schematic design phase its now time to focus on the exterior. Namely, the driveway.
Bring your house model back into the terrain model. Next, create a plane large enough to cover the front of the house where the driveway will be located. Then intersect it with the house model to create the outline that you can work off of.
Next, hide your house model and change your perspective view to parallel perspective and look from the top viewport. Disable any layers that aren't necessary for this phase such as building setbacks etc. Make sure your main road, terrain contour lines and obstructions such as tree locations and large boulders. As well as hiding the terrain model or make it 2D.
Then, using the line tools you can begin to model the driveway, keep in mind the location of where it is located in tandem with the terrain contours. Meaning, find a spot that has a lower slope. Once you are fished modeling it save a copyright before you drape it on the terrain.
Next, select the driveway and enable the terrain model and drape the driveway upon the terrain. Texture it beforehand if necessary