No matter what you are thinking, or whether you think it might not be the best you can do, just write it down.
You can re-read it later and think about it. Then, you can edit and make it better; or enjoy what you wrote at first draft and love it as it is.
There is never any harm in making notes, having a draft, re-writing (and re-writing again.) You can’t do this however if you don’t put pen to paper, fingers to keys, or dictate an audio note.
Stop waiting. Don’t forget. Just write it down so you can share it later.
~ Dawn aka Hat Girl