I will politely present it to him/her acknowledging that his/her opinion is also good but it can also be done this way and the results will be better.

I'll present it as an idea gotten from one of the company's top competitor so as not to make my boss feel inferior hence being an enemy to me.

i will talk with my boss,.

I will put forward my opinions to my boss, and discuss with him how important it is for the company.

No one is an high land of knowledge. It depends on the boss. Some bosses won't accept your opinion and will blame you when there's flaw. While some... has listening ear the problem now is íf you aren't their fans. And last some will buy and appreciate and execute your idea more