Hi
I took several pictures of belt borders for a thread on Skidmore's leather cream and thought that the pictures could be helpful here. I have several hourglass or double serpentine stamps from both Barry King and Tandy. As a hint, when you pick the sizes you like, buy one from Barry King, they last a LOT longer. Anyway, I've used both the Hourglass picture in the first attachment. It looks good, but it is necessary (in my opinion) to draw lines on the leather as a stamp guide. I'm an engineer, I measure things (except booze...). I use soft lead pencils, drawing with the side so as not to leave a divot.
On the Hourglass in the second attachment, I obviously used red markers which I read ARE SUPPOSED TO BE INVISIBLE, but they're not, so back to the soft lead pencil.
The hourglass is more interesting, but more of a pain to stamp. with the single serpentine stamps, I just draw the outer guidelines and stamp with just a hair between the stamps. Literally, just enough to see a separation. I do 12 on the inside (both sides of the belt, and then the outside) so I don't have the whole belt wet at the same time.