Ok well ive proposed twice so heres my advice,

The restaurant thing is a good idea but dont drop the ring inthe glass, instead wait till she goes to the toilet (they always do) then call over the server and ask for 2 glasses of champers to be ready behind her somewhere and to wait for your signal. Then when she gets back and sits down. Down on one knee you go and ask the question, if the server has got their head screwed on right when she says Yes the champers should appear. Cue much hugging and kissing.

The other way is to take her to her favorite place, somewhere that means a lot to her and just ask her straight out.

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