Dear Sir/Madam,
Greetings !
hope this proposal finds you well !
I have a lot of time in my hand since i am in quarantine right now and im using this time as useful as possible and thats why I am certain I would make a valuable addition to your work. i would be interested in helping you,
with that i have enclosed my proposal for your consideration
I look forward to speaking with you to discuss how my abilities would match your needs
sincerely,