Hello!
I am willing to put your advertisement on my signature on my profile and make atleast 20 constructive posts a week. Only term is I want you to leave me positive feedback about good posting after successful week. This is to maybe help me get to my first paying signature campaign when I reach JR. Member.
Thanks!
Your signature space is not special in any way, you are a newbie with nothing more than 10 posts. Secondly, what you're attempting "Give me positive trust for doing x job for free" is a clear case of trust farming which will guarantee you a negative rating. And lastly, there is usually no special rule in signature campaign that requires you to have a good rep.(you must have neutral trust though), even if there is, its only for Sr. Members and up(which you are very far from getting).
tl;dr Lock the thread if you do not want someone to neg you