Here is a proper way to request a signature/banner/logo or anything else. I made this so the people making the persons request would have a better understanding of what they want, and then the requester would be happier with the outcome.
Text: any subtext: size: colors: renders/images: font(if you know)
For image makers:
Provide at least 3 different styles of the requested image. This way your client can approve of one or request a combination of styles afterward.
A digital artist is meant to suit the clients needs, if your client doesn’t like the image, then remake it.
P.S. Don’t make all images of the same style for different clients. Variety is king and no one wants to see the same thing over and over again with different images.