Ranking
Hmm, perhaps ass some more of the secondary pink color on that space on the back?

Keep practicing on them tribal heads bro.
Tribal is a style. Look at Wafflez's library of them if you ever need inspiration lol, I remember he used to make a ton(on my other account I saw this) Also, try to fill in the awkward spot on the back of the head, where there is distort.
DAMN.
People over exaggerate how easy it is to make a good tribal.

Look at Micho and BenDovers work, they make some pretty sick tribal textures.

Anyways, yours need some better eyes. Too much space on them for this style of tribal. When you use the brushes, make them flow together more coherently. If you need some pro help on doing tribals, try to see if you can get Micho or BenDover to give you some tips.