Misleading Image 

The character 永  only has five strokes, not eight, and is indexed that way in dictionaries. The middle vertical stroke is performed with one motion. The leading dot occurs by the landing of the brush on the medium, and the final "tick" is performed by flicking up and to the left. It's misleading to explain this as three separate, overlapping strokes without additional explanation. Similarly, the left stroke is just one motion also. A stroke isn't a necessarily a straight line. It is a congtiguous motion performed without lifting the pen or brush.