Congratulations on your engagement!
The first thing you need to do is set a date and once that date is set you need to let your guests know so they can clear their calendars and plan travel arrangements. Save the dates can be sent anywhere from one year to six months before the wedding. They should reflect the feel of your event and be just a hint of what guests can expect for the rest of the stationery and events to come. I am happy to customize any of my current designs to suit your needs or create something new just for you! Turn around time varies but usually is 1-2 weeks.