assuming you WANT it to be "darker", here's my experience:
it is the surface finishing techniques that truly make something "darker", and that create visual cohesiveness.
often, DURING the early/middle stages, some of my stuff will look garish or overly bright. but that is because i know i will finish with washes of dark acrylic, or metallic patina, or something that will subdue and harmonize the elements.
always test on scraps first!!! so, take the scraps of all the materials u used for your doll, and see what happens if u do any of the following:
--u brush all with dark acrylic diluted with water
--lightly spray paint from afar with dark color
--dredge through dark coffee
--roll in dirt, beat with rocks, sand raised areas, etc
--remove one eye, or add some messy stitching, etc
Thank you for your tips!!
Making things "imperfect" is like a fight for me!!! I will try some of your ideas when I get home!!