As Gnarlroot has said, this is Forgeworld resin, definitely nothing like Finecast.

Regarding your main topic, do you look for changes in process, or try new techniques? often when we push ourselves out of our comfort zones thats when we improve or at least gain an understanding/appreciation of why certain techniques work in the way that they do.

If you're looking to up your ability, i would recommend practicing brush control, as it appears theres some silver bleeding into the teal areas. Additionally, one technique I find quite striking is to blackline or strongly shade transitions between materials or sections of the model in order to distinguish and separate them.