Well to start I wouldn't ask people on here. You need to think of something original that is going to surprise your girlfriend. It is going to mean more to her to know you thought of it yourself.

when proposing, you ask her to marry you, dont mess up that question and your good.

Alright, now I know mine was pure cheese and everyone does it, so I changed it, my original plan was during our graduation I walk up to on stage and ask her but she freezes up in front of people, so I waited until after we got our diplomas and when we were walking off the stage and we got into a room where it was just us, I got down on one knee and proposed. It still had the value of doing it during graduation just without all the people. You're probably past graduation so I had to share my experience. Take her out to dinner, or look up on YouTube flash mobs? Or even record a video of you talking about how much you love her and a video of you asking her dad's blessing and take her to the movies and have the movie place play it right before the movie and once the video is done walk up to her and propose.

Go to a sporting event and get it on the big screen.

What is she into? Doing something creative can be hard. I read on reddit, a couple was into Pokemon and he went on a hike with his girlfriend and pulled out a pokeball and said "I choose you." bang bang match set!

I go with the take her out for a meal! but she may really want to go somewhere you could take her on a small trip and drop the question by a nice view or some thing (depending on ya cash) takes allot of ballz to pop that question so i wish you the best of luck

Easy but really good one my bro did. Make a phony menu that says will you marry me on the inside and pics etc. and have the lady bring it as a desert menu! I loved it!