Marvellokee: Nice work. Some objects aren’t recieving direct light from nearby sources. With the trash can and balloons a lot of their light is coming from the right side yet they’re positioned right next to the carousel. Try to get their shading to be brighter on sides that are facing close light sources. The overall ambience light seems a little too bright for a night scene, the ground in the dark areas is brighter than the sky.
xeltestic: Good work! The work you’ve done with the cool light on the right and how it’s casting the shadow of the tree across the walkway works very well. Some of the light sources seem to be extremely bright and end up being white. Try to stay away from creating such bright light sources, they immediately draw attention to them and it’s hard to move on from there. The balloon is getting lost a little bit in the image. A soft highlight is right on the front of the balloon, try to push the highlights more to the sides of the balloon. You may also want to work on the highlight size and/or roughness of the specular highlights. A lot of specular highlights seem to be resolving to bright dots.
Onkamon: Try to get a little more continuity with light between objects. Take a look at the tent in the background and how bright it is, then when the tent meets the ground the ground is completely dark. Try to get rid of this sudden change.
VinVang69: Nice image. The lighting between the foreground and background doesn’t seem to entirely match. With the broad square highlight on the balloon I would expect the environment to be in a room with a window, or even a studio render. Perhaps having a number of circular highlights will make a little more sense, similar to how the background has many circular bulbs. The intensity of the light coming from the background onto the balloons is brighter than the light sources themselves. Make sure that the light sources are always brighter the light they are emitting.