The chromatic of this piece is truly impresive. You used colors which are opposed and create a strong contrast when are brought together . It's not really easy to use contrasting colors and make them look good together. You managed to create a beautiful contrast and this is observable especially on the shading of the skin and on winged fish's feathers.
All the hard work and attention you paid for this piece of art is visible. There are hundreds and hundreds of details, from the winged fish's scales to the tempestar's horns and hair.
Although you were inspired by mythological creatures the drawing is mostly original as you made it in your own style and you used your imagination and I didn't see it anywhere.
You succeded to create a magical athmosphere with all the effects from the background. Overall this is a beautiful and enchanting illustration which deserves all the attention.