Hopefully this will come out right... Looking to install a small wall at my dad's house, basically for practice. Question has to do with prep. The house is a walkout, so naturally the grade from the front of the house to the back of the house drops - probably about 4ft or so. The house is 40ft wide with a chimney in the center of the wall. The idea is to install a small wall from the right side of the chimney to the back corner of the house. Question is, do I start at the back corner of the house, the lowest point, and cut level to the chimney to start the first course of block? This would cause a few courses (or at least half of them) to be buried. Is this an effective way to go about this venture?