woah this looks like a real game

If you don't already, keeping a a pelette (even just as blobs) to which you add every new colour could help with that! If you try to keep ot organized as ramps and try to place similar hues next to each other, it'll make it easier for you to see what colours you already have and how they can be used (especially the ones you're using sparingly, which are easy to forget about), which'll make it easier to reuse colours instead of adding new ones. A palette sorted by hues and possible ramps also makes it easier to think in terms or reuse, instead of firmly associating each colour with a specific object. It'll also make it easy for you to see when your palette's getting unwieldy xP
I often keep a layer around just for the palette. Having it as a separate layer means I can easily reorganize it, drag it around where I need it and hide it, while still having my work document take up my whole screen.

Thanks for the very detail comment. I appreciate it.

Picking color palatte is my weakness, iam studying hard to improve it.

Thanks, glad you are the naruto fan

Yeah, it is what i mean, Sakura did nothing in this scene XD

As someone who's currently rewatching the series, I like this very much :)

Good portraits, very pretty texturing on the grass, and I guess Sakura has full HP and chakra since she never does anything :D

The pixel-work on this is ace, but I feel like you've let the palette get out of control. For example, the trees, mud, and rock in the foreground all look like they're the same brown, but they have separate sets of browns each. The scroll has a unique colour for the AA on the symbols, even though the light brown from the scroll's border works better. Sasuke's face has some purple AA that's not used anywhere else, and isn't distinguishable from the rest of the AA except when zoomed in significantly.

There's a huge number of opportunities here to reduce the colour count without hurting the piece at all, I just mentioned a tiny sampling. That doesn't mean you should do it (the colours actively hurt the piece - they just don't contribute), but that you should be mindful of colour sprawl in the future. Instead of picking new colours for every part you draw, first try to draw it with colours you already have, if you have some similar ones. You can always add more or change them if you're not happy.