Yes there´s improvement,
I know you have took time to make it all clip together, but my point was that you´re overusing them.
The smudge Jack Sparrow is a good example. You made a background with smudging. The smudging is aight, but with few basic smudging tricks it would look a lot better. That´s why I tried to say you should practice that area too.
Secondly what happened with Sparrow sig is you bombared so much fractals and c4d renders, it rushes over the background. Also the render blending is a thing you should improve.
I´m not saying these things in bad intention. I´m trying to help and point few things you can practice and so fort improve as an artist.
I´m sorry if you got me wrong in first place.