Power of three

Yeah, once I wanted to create a video, but after this picture (The boy should have been the first pic) I don't know if I can do this .__.
Well, yeah the three signs are from me they mean knowledge, Magic and Power/Strengh
If you like to use them tell me and giv credits

ooookaaaay, I still need a name for him...he's the little brother of a girl.
I wrote a story about them on the song "Taking over me" by evanescence
In the story I created, the nameless boy dies (gets reanimated by a wizard) and he can't remember, that the girl is his sister. After this, the girl (Perhaps her name will be Luna, like every oc I draw xD) gets dominated by a strange dark power. With every chorus she gets one of the three signs (1st: Power, where she kills many people of the empire. 2nd: Magic, she burns down one area of the empire and at last she gets the sign for knowledge, where she finds out what she did. She battles against the dark power)

euh....if you understood you're really good xD Well, just tell me if you have any reason
I need:
-Names
-tips how to draw the story without throwing away my tablet