For self employed person wanting to get a hdb

What documents did you need to provide besides the NOA?
Did you have difficulty with qualifying for a loan?

Do they look at cpf? I have none. Only Medisave contributions that are mandatory

Will they ask to submit bank statement as well?

I’m worried I won’t be allowed to get a good mortgage loan

Also which is better -
Paying a larger downpayment and taking smaller loan or vice versa?

Thankyouuuu