Oil Level?

Just a quick question... where is the oil level supposed to be on the dip stick? :confused: I've heard in between the L and the H, to the top at the H... I don't know which to believe.. I just changed my oil (I do it my self for the joy I guess, and the Valvoline Synthetic...) and it's at the top of the threads right at the bottom of the H on the dip stick.. is this ok? Or am I harming the engine with too much oil? Any knowledge would be greatly appreciated!