For my sister's birthday last year I decided she needed an 18th century gown. Ok, that's a lie. For my sister's birthday several years ago I decided she needed an 18th century gown. I had the pattern and the fabric in my stash. It. . . just. . . didn't happen at the time. So fast forward to last summer. I decided that 18th century gown for my sister was absolutely going to happen for her birthday, and I actually managed it this time around.
It did help that I had a late 18th century costume demonstration scheduled for about a month after my sister's birthday, and I'd invited her to help me out with it, promising I'd figure out *something* for her to wear.
With an event already scheduled for her to wear the dress too, I actually had to get it done in time for her birthday!