top one has got some great colour to play with , bravo.

The Kid ones feel off in there fractals/c4d
If they feel to bright for you heres a tip,
Place your effect in first than put it on screen but lower the opacity, than dup up the image than put it on the linear dodge or colour dodge or w/e you have it on an raise the opacity just before it starts to look over contrasted

The second kid has got some good back light, well done on that as well, gives it grea depth.

KIU EJ <3