ExcelMark Custom Signature Stamp - Self Inking - Medium

May I add other information besides the signature? I'm wanting to use this to sign off skills records,but need my instructor # along with my signature

Is there some kind of mark on the stamp housing (body?) to indicate where to align it with the signature line on a document?

The only signatures that I can find have a straight line underneath the signature. Can that line be removed so just the signature is present?

Will this work if photo of signature is in blue ink? The stamp will be black ink, couldn't find a black pen at home.