When I attempt to copy a signature and stamp it in, the stamp comes out wonky?

I am attempting to transfer a signature from one page to another, the process is a success, but when I do stamp my copied signature it comes out all wonky, the signature is stretched and I can't edit it to make it conform back to its original shape. The only option I have is to rotate and resizing it, but I can't alter the shape. Help?

Update: When I try to drag and select the signature vertically, it pastes it normally but I can't get the full signature. If I drag and select the signature horizontally, it comes out compressed and scrunched together.