Could you pls help me correct my grammar on the SPA i made, as i granted my bro. a power 2sell our land?

To offer for sale and or negotiate with any third party/s on my behalf, enter into contracts for sale, execute conveyances, enter into any ancillary transaction and/or contract necessary to facilitate any such sale and to deliver any deed or other conveyance necessary to facilitate such transaction, to ask for, demand, process and sign receipts and/or doents and receive all monies in trust which may become due and owing to me by reason of such transaction.