The final step is to etch your board. I'm not going to go into detail here as this is a common process and you should already be familiar with it. If you're not familiar with it, look around Instructables and you should find plenty of great guides.

Remember to wipe the ink away with the acetone only just before you begin soldering your components. The ink helps prevent the copper from oxidizing until you are prepared to solder.

While the hand drawn layout on the bottom side may not look professional, you can't tell the difference between this quick method and photolithography or toner transfer methods on the top side because of the uniform placement of the components.

Good luck!