I feel an artist should have a lot of freedom, just like TiffanyP, so I will give you what I can, but if you feel something would look better or are feeling something else at the time please feel free to do what comes to you. Your art is way to good for me to try and give you direction!
Name of animal: Helios
Species of animal: super deltatail betta
Dragon version: Yes/No (please say yes when the species is betta) Either is fine. I love you dragon betta pics, I love you fantasy betta pics, and would equally love a normal betta pic of this guy too.
Colored: Yes please
Background: Being a sun god I would love to have something sun or sky related to go with his name.
Other/Extras: Anything you feel would make the pic look complete
Reference picture: I loaded a couple pics for you. Hope they are ok. If his cellophane coloring is difficult to figure out just let me know, I can choose another betta.