Where can I start. First off the lineart is not the greatest. When someone has crappy linart it can really degrade the colours and the entire piece itself.
You was on the right road with the shadows as in you had good colours, but you fell off that road half way there. To me this picture looks flat especially Sasuke so take note; add more shadows and be creative as in see where this shadow goes
if it goes wrong you can always Ctrl + Z it away
The lightnight around both Sasuke and Raikage, the colours were decent, but you made it a bit too transparent.
The background. What I see from it is that Sasuke and Raikage are at fast speeds and from their point of views they can't see around them because they are moving to fast. It is a good interpretation if that is what it is, but it is all around the place
Nevertheless this is still a good picture and thanks for putting the effort in
