Here's the first of seven (all of the tribes) scale tutorials! Requested by @tyrocks31, I will explain here:

1. Start with your body outline and underbelly. Then from the underbelly, draw an angle pointing down.

2. Draw another angle from the bottom of the first angle (a little past).
3. Draw a curve from the last angle's right side

4. Repeat!

There you go! I hope this helped, others coming soon!
I used a 0.7 mechanical pencil