Not knowing the number of guests is the hard part. Did you put a RSVP by ... on your invite? I recently made myself a list and gave myself a deadline for each thing. I basically divided it so that were a few things to complete each month until the wedding. It made me relax a little. Looking at a big list is overwhelming, but if you can reduce it to manageable chunks it helps! Get done all of the things pertaining to you (dress, shoes, bridal party outfits/gifts, vows, rings, ceremony/reception music ...etc.) and do the OOT bags later on. I'm going to try and have mine finished by March 30th. By then I should know how many ppl are coming! For table decor. Find your inspiration pictures so you know what you are looking for. Then you will just need to go out or order what you need when you have your numbers.