(blog admin’s note: not an expert on fashion, these are just notes because he asked me)
— Since you asked me about what you’d wear, and said you were opting for a black necktie, here it is:
For plain black and other plain dark-colored necktie, choose a narrow one (narrow width). See photos below.
(all photos were ripped off blogs that ripped them off other sites without acknowledgement of the original site; so…i don’t know what the original sites are, this is the only time i’m posting “celebrities’ clothes photos”; used here for non-commercial purposes., and apologetically; my “usual viewers” might not like this — this post is meant for high school students; i’ve had commenters who were in high school, so…this is for that demographics)
Narrow black neckties, if you’re choosing black.
Don’t wear too many prints on your necktie. Never wear a paisley necktie.
Striped neckties and those with tiny geometric prints are alright.
For neckties other than black and dark-colored ones, you can choose a regular-width necktie. 
Make sure your tie doesn’t fall below your belt.
I’d choose a more casual, informal attitude since this is really a party: don’t knot your necktie too tight, let the knot hang a little below your collar for a more informal look – it’ll be more relaxed — easier, so you can move around, hang with dates and friends — and socialize, you’ll have more fun that way!
