the smudging technique is pretty good, i like it.
try working with a larger canvas and then re-sizing, it makes it easier to add detail.
the intended focal is weak due to sharpening issues which are also ruining the depth.
composition could be better, i feel like the flow is lacking too, its chaotic.
colours are boring and dont really mesh well.
lighting needs work.
over contrasted
that effect c4d line thing ruins the flow