Advice for HSMP Application staying within UK !

[Srini..]

Hi !

I am planning to apply my HSMP application within UK as I have completed my Master's degree from UK University. Please help me with a covering letter to show previous earnings or earnings within 12 months staying in UK.
If anyone can suggest or advice me of how to proceed with my application staying within UK and getting 75 points.
I need help with how to collate information if I am studying (Full Time), staying and working (Part Time) within UK for previous 12 months.
A brief about my point scoring:

1. Qualification: Points Claimed 30 (Bachelor Degree)

2. Age: Points Claimed 20 (Below or 27 years old)

3. Previous Earnings: Need help with Part Time UK Earnings

4. UK Experience: Points Claimed 5 (completing my Degree in UK)

5. IELTS Test Score for English Language proficiency


Appreciate you help in my HSMP application

Regards,
Srinivas