Don’t wear too much makeup and avoid revealing dresses as well.
Punctuality is a characteristic that most people value and appreciate, so please make the effort to be on time. I suppose it all depends on how well you know this person.
Remember that you’re not attending an EDM rave, so don’t dress like you are.
Cover up the naughty bits, but do not hesitate to show off your assets.
Also, we recommend complimenting her on three different things (look, style, personality, taste etc.) at appropriate moments.
You can also score by minding the language you use: instead of using a phrase such as “I want”, use “We should” instead.