In a marathon session tonight of about 2 hours, I finished putting in my edits to the computer and did one last set of tweaks to the first few chapters. It's done! Hooray!
I'll now start sending copies out to people who have requested it, to hopefully get comments and criticism coming back in. I'll collect those for a few weeks (depending on how long it takes people to get a chance to read it) and after one final set of updates it will be time to start sending out query letters to agents.
This is a big step! I'm tired but very happy to have assembled a real first draft which is of good enough quality to be seen by others.