Follow this :
Name :
Multiply number (like in Kaio-ken) :
Stronger version (optional) :
Power level :
Stamina :
Beyond custom or cannon super sayan form (optional) :
Control (controlled or not controlled) [optional] :
Speed (like in kilometer's) [optional] :
Hair colour :
Aura colour (mixed aura color's are allowed!) [optional] :
And i think that's it!

Anyway's, lemme show you my own custom sayan!
Name : WISKITE SAYAN
Multiply number (like in Kaio-ken) : X10000
Stronger version (optional) : BEYOND WISKITE SAYAN (stronger), LEGENDARY WISKITE SAYAN (EVEN MORE STRONGER THAN BEYOND WISKITE SAYAN!)
Power level : 2 trillion
Stamina : 200 trillion
Beyond custom or cannon super sayan form (optional) : BEYOND ANY FORM EVER! (instead of the ones i mensioned in the stronger ones)
Control (controlled or not controlled) [optional] : Controlled
Speed (like in kilometer's) [optional] : 5 million Km/s per second (Most speed)

Hair colour : Orange
Aura colour (mixed aura color's are allowed!) [optional] : Orange and yellow