Guys with long faces might want to steer clear of the Horseshoe since having long tails extending below the lips can exacerbate facial length. Short, wide faces on the other hand will benefit from the gesture. It's also a good choice for bald guys since it adds some texture to the head; the Horseshoe will be forever associated with guys like Hulk Hogan and Green Bay Packers quarterback Aaron Rodgers – and that leather-obsessed biker guy from Village People.
"You're going to grow a beard and then extract this shape from that," Decatur advises. Once you've got a full face of hair, it's a matter of knowing where to shape. Shave off the beard and the area beneath your lower lip, leaving a trail from the sides of your mustache down to your neck.
Next, shave the line of the mustache just at the jawline for a true horseshoe or a half horseshoe, like the one Paul Rudd rocks in 'Anchorman.' ("It just shouldn't bleed onto your neck," says Decatur.) Then comes the tricky part of shaping the width of the 'stache. Your lip brow will have its own natural shape, which will probably look the least fussy, but a good rule of thumb is about 1/8 inch to 1/4 inch across. Any more or less will border on the extreme. If you do need to trim the width of the sides, do so about two times a week.
How burly you want to go is up to you. The Hulk obviously has a bush going on, but others keeps it tight. We'd suggest a firm middle ground.