Suggestion 1: I would take the SFX of the Chidori instead of the bubble from the first image. The "letters" look better from the SFX and besides, Sasuke isn't even speaking in your manga coloring image.
Suggestion 2: Personally, I would change the font of the message "The power of the real Uchiha Clan" and the color as well. Actually, the fact that it's purple I think adds to the purpleness that was part of my criticism #1. Have some variety in color.
Suggestion 3: Take out he "real" from the message. "The power of the Uchiha clan" is less verbose and more to the point. I know what you're getting at though: people like Kakashi and Danzo will never amount to the prowess of the Uchiha. I feel like it communicates the same thing without real. With "real" it's just more emphatic. This is just my perspective.