Hello Sir,
You are looking for...
Your job attracted my attention because it is compatible with my freelancing interests and experiences.
The nature of this project is very similar to previous work I have completed. They found my work exemplary and attractive.
I need __days and you can pay me __ for this project.
For clarification, may I ask if your audience responds better to a general or more technical approach?
I hope to hear from you soon so we can start working on this as soon as possible.
Sincerely,
Sunny Patel