Help to convert my text into business proposal style

Hey! My English level is C2, and I have a native English speaker in my team (American English). She is a professional copywriter, and she can take on this project. She can get the work done immediately! She also has extensive experience writing business-style texts.
If you'd like to make sure that she is a native English speaker, you can do so!
I can send you samples of our work privately.

Good day!

I am a professional writer with an experience of about five years. I have been writing business documentation for almost four years; my previous experience as BA let me create understandable formal text.
You can check some of my works over here: Google Drive

Please, don't hesitate to contact me for further discussion.

Hi Arthor,

I can help you get that straight. I need you to find me on my site. We can talk about details and official numbers.
I'm an American, and copywriter for over 10 years.
There are certain point in every proposal you need to bring out first before the actual offer. I can help you with that as well as other things.
http://chrisvoicecopyright.tilda.ws/

Best,
ChrisVoice

Good day, Arthur,

Please send me your examples to the private message here.
My experience in a writing of business e-mails to the foreign customers, in a creating of business presentations and business proposals in the international company will help you.

Will be waiting for e-mail from you.

Have a good day,
Tanita

Hello Arthur,
I am good at grasping the essence of the texts and conveying it in a concise and eloquent form.