It's hard to find a good signature for a Newbie !
maybe someone will prompt me where to look a signature or a good bounty? sites, groups?
If you want to earn good, having a newbie rank is not possible.
There are some who accept but the payment is really low, maybe try to rank up and contribute to the forum so you will
get merit that will help you to rank up easily.
On the other hand, I know the process for rank up is very long, you can do bounties other than signature, you can check on the bounty section
in this forum. Hope my suggestion would help.