If you find a new pattern you love, buy all of the things and fabric cuts you need to kit it up. Many fabric manufacturer's only carry the fabric patterns and lines you will need for it a season or two. Then you will not find it anywhere. I know we can improvise, but why if you love a certain look?
Snip off a tiny corner of your fabric before washing to stop so many frayed threads from showing up.
I keep a small spiral bound book handy to record settings and threads I like and sometimes I even sew a patch for reference later.
The sizes of people I sew for measurements. And the year I took the measurements. I also record what I made for christmas for someone and the year. This eliminates repeats. Many things are in that booklet for my memory is not to be trusted anymore. LOL!