Ladies and Gentlemen, the Wonderbolts.

WTF are these options? There should be stars for technical things. Ignore the stars.
For the purpose of stars:
Vision = Composition

Composition:

Big yellow wing halts the flow from the foreground character's vision, creates a weird interrupt when scanning the piece

Nothing circles the viewer's eyes back to the upper left. Both RBD's trail and Spitfire's head guide the eyes down and to the right.

The vertical rainbow fails to block the right edge because RBD's trail overlaps it.


Lighting:

The lighting on the characters and the background come from different angles.

The shadows on the characters are more vibrant than the highlights, flattening the limbs and making it a bit chaotic to look at

Value::

The background characters are too dark, they don't appear to be in the distance as their size indicates.

RBD and her trail's contrast is too similar to the vertical rainbow. They appear to be adjacent in space and this ends up pushing the rainbow and the clouds forwards.

Derpy's anatomy is confusing because of the lighting on her pose
Technique:
Clean, deliberate shapes, and warm-light/cool-shadows adds depth

0 originality because fanart

0 impact because it lacks a compelling story or message

I love you.