Found a couple forum topics related:
- Wrist & forearm pain
- The 8 Essential Beginner Chord Grips - #20 by LievenDV
- The F Chord Lesson on JustinGuitar - #104 by Richard_close2u
I’ll see if my own pics can do any better and edit this if useful.
edit - ok, cannot do much to improve what I linked. I did notice that I only bend sharply when I am using little finger on string 6. I have an annoyingly short little finger and a ring finger that is almost as long as middle finger, so extra bend on the wrist is necessary for me only for little finger on string 6 and kind of string 5.