Seven half-bloods shall answer the call

Finally finished!!!!
I started this drawing 2 months ago (before my exams).... and I've colored it today!
I'm so happy with the result!

I hope you like it


"Seven half-bloods shall answer the call,
To storm or fire, the world must fall,
An oath to keep with a final breath,
And foes bear arms to the Doors of Death"

Characters: 
Frank Zhang, Hazel Levesque, Percy Jackson, Annabeth Chase, Leo Valdez, Jason Grace, Piper McLean - Heroes of Olympus, by Rick Riordan

Pencil Sketch + Photoshop + paint tool SAI