Problem with small folding tables is that if desk top is small there is not much place to fold legs.
Step 1: Cutting
Min leg panel length = desktop -panel width * 2 -1cm
In my case
75-1.8*2 -1 = 70.4cm
I made round cuts with radius of 8cm which was smallest I can make with saw-blade I had so for comfortable cut make it bit bigger.
You need desk top and to leg panels. Cut leg panels as on image. I made first middle cut and then from that cut 3 parts for legs.
Step 2: Connecting