How to build a small false wall

How to build a small false wall ‪@GrantKeysProperties‬ I’m showing you guys how to build a small false wall, in my case for upper kitchen cabinets. But you can do this on about anything. Here is the tools that I recommend for the job. I get a small commission from Amazon because I’m an Amazon affiliate marketer and would greatly appreciate it if you use my links! Thank you!! 
Dewalt drill! amzn.to/3SrFcTB
Dewalt circular saw! amzn.to/4b5GHOx
Dewalt battery! amzn.to/42bzLeL
Rubber mallet! amzn.to/3vQwaa0
Hammer! amzn.to/3UbuBNZ
Speed square! amzn.to/3u4bZER
Tape measure! amzn.to/3vN8oLY
Pre-drill bit! amzn.to/3vISlyx
Milwaukee magnetic bit holder! amzn.to/48ONpa7
Drill bit set! amzn.to/492qo3a