Homebrew PCBs

I have posted a photo of two boards one made commercially and one
homebrewed. I am not trying to reproduce the commercially made one
else I would just purchase them. It's the bottom one that I need about
25 more of. I did not make the homebrew so I have no idea how to cut
the card edge that is so critical for success. 

I have never made a pcb but would like to give it a try. Please look
at the photo under Richard M and give me some ideas.

Thanks in advance,

Richard