I was inspired by the reveal watch from projects. I made a clock rendition of it.

Assembly:

1. Press the clock movement into the clock face's square hole. It should friction fit. If not, you may glue it with super glue, making sure to avoid the center axle. 
2. Push the clock face into the main frame. I would recommend using something like PLA gloop or Loctite to secure it, as the friction fit isn't enough.
3. Install the disks: place on the hour disk until it is all the way in. Make sure to add a small gap in between the clock face surface and the hour disk. Then, push on the minute disk. Make sure the two disks are in the 12-o-clock position by aligning them manually. 
4. Set the time using the wheel on the back of the clock.