Hi,
From the description, I came to know that you are looking for a man who is really good in English and able to understand the terms and conditions.
I can make sure that the "COMMISSION ONLY' term is quite clear to me and I am ok with the percentage of commission. I am perfectly satisfied with 5% of commission for each sale that is made by my message.
I am very much dedicated to any kind of job. So if you award me with the project, I can make sure that you won't get a single chance to complain. I will try my best to satisfy you with my work.
Undoubtedly, you would like to provide this job on a skilled brain and reliable hands.
Thanks.