Main flow the design could start just below your elbow with a tree silhouette slightly realistic not cartoony its branches reaching upward and outward galaxy transition instead of leaves the higher branches blend into a starry night sky with scattered stars and maybe a crescent moon or a planet hidden in the branches water element flowing downward along your inner forearm you could have a stream turning into waves wrapping around your wrist softly not bold tribal waves but more realistic flowing water balance the outer forearm would show more of the cosmic galaxy details clusters of stars a planet maybe saturn s rings while the inner forearm carries more of the water element giving you a front and back dual vibe style fine line realism slightly intricate but not overcrowded shaded greyscale with hints of depth or if you re open to colour subtle blues purples in the galaxy parts could make it pop tattoo idea - made by Ink Studio AI