Almost the first thing that I end up spending each time I start a new (OSS) project is getting the licensing right: choosing and publishing my own (without whic

Almost the first thing that I end up spending each time I start a new (OSS) project is getting the licensing right: choosing and publishing my own (without which no one can legitimately make use of the new work), and respecting that of others' work that I use. Then put it somewhere that most people can get at, eg GitHub. Then talk about it in places that will help others find it, eg through search engines, but also at meetups (I just found a talk I gave as FOSDEM in 2014!). All the other things that you list are good too, but if no one finds or uses your stuff then your efforts maty have been in vain!