Looking for advice on DTV visa application

I’m currently preparing to apply for the visa and could use some help. I’ve searched through past posts and found some useful info, but I’d like to hear your suggestions.

I worked as an online English teacher for the past 2 years and finished my contract at the end of February. I have payment slips and will receive the final one next week. I started a new job mid-January as a private contractor and have payslips for the past two months, plus a contract and a letter from the company.

Since I’m now a contractor, I assume I need to apply as a freelancer. Do I need to provide a portfolio (I don’t have one for this role), or is a resume enough? Also, can I submit payslips from my previous job even though I’m no longer employed there? I also have proof of the required 500k baht in my account.

Any advice or experience would be appreciated!