This contract is not meant to trick or deceive you; the intention is purely to protect both parties. I have tried to keep the wording as plain as possible, but if anything is unclear, please let me know and I will be more than happy to clarify it with you. Also, until you sign it, please feel free to request to change bits of it to suit your requirements.
In short, [client name] is contracting me, [my name], to [description of my role] between [start date and finish date].
By signing this, you are confirming that you have the power and ability to enter into this contract on behalf of [client's company].