..It depends on what their name is. Example) Jason: Jay.
jay
No Bonez
Jason Williams Jason Williams
Dizzy is the nickname of Jason Neil Gillespie, the Australian cricketer.
Jason Kidd
Jason Gillespie
If you like 'Nan' as a nickname, then yes, it is a good nickname.
A good nickname for what? Sounds a bit pansy
It does not require a nickname.
Jaz might be a good nickname
A good nickname for Sheila could be Shei or Shelly.