I am afraid that your method is too dangerous. You are basically saying: give me your account - I will boost it up for you.
But you need to understand that people are afraid of this, and you are not providing any form of insurance if anything will go wrong, hence - no one is interested.
There is planty of ways to recover your Steam account in case something bad happens , personally I don't see OP like he wants to scam.
@OP , I was searching for Partnership , I'am Legendary Eagle Master rank . Let me know if you want boosting together however I won't connect into players accounts because this is too much responsibality and I don't want anyone to use me of anything so I would play on mya account with you , and earnings splitted 70 (you) / 30 (me) or something like that . idk