I''d love to help you out with your proposal!
First, you need a ring. Diamond rings will do, but if you want to guarantee the woman/man of your dreams to say "Yes!" I'd go with a ring-pop. Generally, cherry ring-pops are the way to go, however, you know the woman/man you're about to propose to better than I do.
Secondly, you need attire. What kind of scum would propose to the love of their life without the appropriate attire? Now, as mentioned before, you know your love better than I do, so this is where you decide what they'd like to see you in. If you aren't sure, I'd go with a horse mask, boxers, and a yellow blouse. Who would say "no" to someone wearing something as undoubtedly sexy as that?
Thirdly, you need atmosphere, or, setting. Don't be the guy who proposes in a typical setting! Stand out! Make this a day she/he'll never forget! I'd recommend somewhere incredibly dirty, and loud, such as a zoo, or the Kardashian household.
Finally, you need to say all the right things. Nobody just asks "Will you marry me" anymore! Write a poem, or something from the heart. If you're at a loss for words, use this. It's a sure-fire way to their heart:
"Marry me now".
--This has been: Proposal tips with Duck--