Yes, I'd like a sign in my yard - you can come and put it wherever you think works and you don't need to get in contact with me further.
Yes I'd like a sign in my yard - you can come and set it up without any further contact, but please see my instructions below.
Yes, I'd like a sign in my yard - but please call me first to make a time and discuss details.
Is there anything else we should know? Or do you have any special instructions for your sign?