This is the start:
I'm not sure what happens next. :D BUT Couple of hours later:
Here's a grid I printed and now I'm marking each
Another couple of hours later: It looks okay. Marking is done, also a bit of sanding. Tomorrow I do a test drill, or should I say DRILL DRILL? lol. IF the result is what I'm aiming for, block is full of holes, and after another sanding session it will get a lick of paint.
Yeah, that is what I'm aiming for... lol.