Warning:
Use 0.2 mm height for the pixels and the clips. I tried printing it with 0.3mm height and the fit wasn't perfect anymore. ;)
You have to print every pixel in the "desired" color. For easier printing - they are named accordingly to a color. In addition you can see the "type" of block in the name as well as the number of blocks you have to print from this type and in this color.
E.g.: “Light grey x4 (38)”
This transfers to:
Use the picture as a reference to find the right position of the blocks. It took me around 1h to assemble.
I recommend printing a bunch more snap fits. Because you will have to break them if you made an error during assembly. ;)
Have fun! :D