Steps

For my project, I first started with the bottom part of the dog house. I used Create>Polygon Primitives>Cube. From there I used the scale tool to elongate the house. I then duplicated the parts and moved them accordingly to how I wanted it to look.  After that I chose the seperate parts to it, went up to Lighting/Shading>Assign new material and colored them brown. Finally, I added grass to the ground from the bar that has different effects.