Help needed ...documents for self employee & full time j

[ganny]

Hi there,

I got a full time job and i will be getting 20k per year and I can provide employee letter and bank statement

I am also self employeed and i had registered with HMRC I will be earning nearly 10k per year, my question is what are the documents i need to provide to support my self earning...

Do i need an buisness bank account or can i still use the same saving account where my monthly salary falls?

please explain how to get letter from accountant regarding my self earning?

Do i need a invoice for doing my self employed work??(any example invoice will be helpfull)

Can anyone explain who done this before please??

Thank you inadvance.