An interesting article about creating a personalized signature for your work.
I’m still on the fence about adding something like this to my photos – some days I want to, other days it feels too pretentious. 😛
Source: Creating a Signature Watermark with Adobe Photoshop CC
A Kat and A Mouse 
That’s how I felt when I started to sign my pics. But you soon get over it. I’m pretty discreet about, using only jmb now. I made a bunch of brushes with different signatures on them to make it quick and easy but mostly I use the same one. While you can see it, I usually try to blend it so it’s not in your face.
I think it feels weird because I’m not a ‘professional’ photographer. Idk – maybe someday I won’t feel ‘phony’ by signing them!