According to the pilot, he departed on the personal flight for the purpose of having an annual inspection performed on his airplane at the destination airport. While approaching the airport, he observed the windsock indicating the wind was from the south, and he planned to land on runway 23. The pilot stated that he planned his approach to clear the fence at the end of the runway and still have enough room to stop on the 1,400-foot grass runway. He also stated that he knew that the terrain sloped upwards from the fence to the runway threshold, and that he "was aiming for the crest of the hill." As the airplane approached the runway, the pilot first added power to compensate for a "fast rate of decent," then reduced power when he felt he had the runway made. However, "the rise was greater than I thought, and the airspeed was lower than I thought." The airplane touched down about half way up the slope, the nose gear collapsed, and the airplane came to rest at the top of the slope. According to the Federal Aviation Administration inspector, the firewall was substantially damaged. The pilot reported that there were no mechanical malfunctions prior to the accident.