Take it easier on the details, your bold colors and cool design stand out better, less is more!
The paradise phoenix is gorgeus, the twin feathers on the head spread the design a little giving it space to breathe.
The yellow snake needs some dark areas,some contrast on the animal itself to completely work as a tattoo.
Large areas covered with only one bright color tend to look confusing on the skin.
Thank you so much for posting your art here, nice work!