I definitely agree with you. The upper half is far too crowded, and at least the cave around Pinkie is just too sketchy. I was afraid of distracting from Pinkie by over-detailing the area behind her, so at the time simply highlighting her with the lighting of the cave seemed like the better alternative. I should have found a compromise, but by the time I noticed it was a problem, I felt it was too late to change an integral part of the picture.

Anyway, thank you for commenting, I really do appreciate critiques!