Here is some vital info to avoid hours of frustration on Blockheads:

Hit the points in order (i.e., in the order they appear). You can use a dry erase marker to number the spots, or you can imagine a four by four grid on the painting screen -- -------------------------| 0 | 1 | 2 | 3 |-------------------------| 4 | 5 | 6 | 7 |-------------------------| 8 | 9 | A | B |-------------------------| C | D | E | F |--------------------------- and each of the brush points are in one of those cells, so if you dot the center of that imaginary grid cell, you successfully "hit" that point.