well i didnt know if i would be able to write this post so i edited a screenshot of the sig in ways i thought would improve it.
first of all you focal is slightly off what i think would be better.
the circled parts are the places that peoples eyes are drawn to and this can play a shit load of help in making depth if you place your focal around these areas n stuffs
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secondly i think your smudging would be better if it went in this sort of pattern
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lastly the fists are the closest part of the sig so they should be the sharpest imo and the smudging is the background so it should be the most blurred. depth is important n a sig so use the blur, burn and dodge tools to mak depth like so
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remember these are just suggestions and i couldnt care less if you listen to me or not so meh..