As a maker and embedded systems developer in a third-world country, I am always facing long delays when buying (importing basically) anything related to electronic components from abroad. A free shipping package from China to my country (Brazil) may take up to 90 days!. Any paid shipping option takes less than one week, but at an incredible high cost.
Printed circuit boards are a pretty simple material in the BOM (bill of materials) of any embedded systems project, but making it can become an skillful art depends on the size and complexity of the circuit. Mistakes made on a PCB design are really easy to make and they can cost you a lot of money, specially when you have to wait up to 90 days to put your hands on the actual thing.
Having a fast and simple mockup of your PCB is a very cheap and handy option, mainly to make it possible to verify component assembly positions and clearances. This is what this instructables is about: how to make a quick mockup of your PCB design and verify whether everything fits OK before sending it to production.
The first thing you have to do is create your schematic and board (PCB) design using virtually any software you want. I personally use the free version of the "CadSoft Eagle PCB design", but you could go" Altium PCB design tool" or ANY other.
What you will do is have your PCB design (also called layout) ready for manufacturing; you should then print a copy of it in scale 1:1 (actual final size) on A4 or letter paper layout.