Use Insert Picture, from this device. ALT+N,P,D
You are going to have to have someone who can see to position the signature afterward, and also to reset the wrapping for text around it to text through picture.
Brian - Windows 10 Pro, 64-Bit, Version 20H2, Build 19042
One does not discover new lands without consenting to lose sight of the shore for a very long time.
~ André Gide