Hello Amy, thanks for joining us!
Judging from your artwork, this is going to be a great tool for you. 
Many of us here have been cultivating patience for a year or more ( which is totally out of character for me) and have been following the development and the trials involved, as much as we could glean from what the team could divulge.
Although there are no guarantees, just projected timelines - the progression seems solid (We are still here).
I think the potential for a delay diminishes every week, but that is based only on my own perception of what has been accomplished, and the ability of the Glowforge team. (A read through the impressive qualifications of the staff is a big confidence builder.)
I have been such a fanboy of this project that some consider me delusional, but a positive outlook is required for me to remain involved. What the Glowforge promises to deliver has made it easier for me.
My bet is the company is going to deliver on time. Bear in mind I also bet on the projected June delivery… 
But my belief is you won’t be waiting a year for yours.
As has been suggested, the forum is a great resource for information. The audience here spans a wide spectrum of professions and abilities. The cumulative input for over a year has resulted in a robust searchable database and a lot of educational reading. Enjoy!
Many have shared their creativity with us and we would all like to see more. Check out the “Show &Tell” thread for some inspiration, and share some of yours!