An avatar is meant to be a pictorial representation of what a service offers, whereby any user with a glance at an avatar should be able to have a clue of what to expect from such a service. So in regards to this contest, I guess the rest participants were disqualified simply because they never used the logo owned by Sinbad Mixer, which we all know how copyright violation is a big offense in the online space.

However, here are my design picks, as I was able to rate them in order of my best choice to the least.

1st Choice

2nd Choice

3rd Choice

NOTE: I was able to observe that the avatar designer by "xLays" and "tjtonmoy" are almost the same with the current Sinbad campaign avatar, and for a contest such as this, we should expect something new which represent Sinbad in a glance. However, I wish everyone best of luck.