I tuned the layout, using the experience from the #Yet Another (Discrete) Clock 10TFF module.
For example, I enlarged the pads of the standard parts to ease soldering. Plated holes help soldering too but the larger pads allow more heat transfer.
I reduced the size to 50×20mm to make it easy to manufacture. You can fit 2×8 boards on a 160×100 (Europe) format, or 2×5 on a 10×10mm format.
I added 2 LEDs because they help check the circuit progressively, during soldering.
The schematic is barely changed :
The layout is much better, though:
Hopefully, it is not too intimidating to beginners.
Another enhancement would be to add a Lithium coin cell footprint, to replace the 2 pads for an external power supply.