Tanning question!

Diana
Hi everyone! I was hoping you guys could give me some info and tips on tanning. I'm a bridesmaid at a wedding and the dress color is Malibu blue so I would like a nice tan before. I know some people prefer spray tans, but I'm looking into the tanning bed. I tan very well over the summer & get pretty olive-y, but it fades during the winter.  If you guys have an tips or advice (how long I should stay in the bed,(don't want to turn orange) what to wear, how long does it last, Can I shave before/after etc.) As you can see I know nothing about tanning. Thank you in advance to all the advice/tips.