Invoice format for my customers under gst

Hdc@123456 (hcd) (21 Points)

21 August 2018  

Hello!

I want to know about the Invoice Format in GST , at present scenario every dealer issued invoice to there customer in there seprate format although there is same information contained in each dealer invoice but the format is different , now i wanna make a special invoice format for my customers under GST.
THANKS