This is a small scale version of the majoras mask made by ferreusveritas, i increased the wall thickness and added an area at the back so it can be made into a keychain, lapel pin or hang from a string.

i also designed a base to go with the mask.

most of the work was spent cutting the woodgrain and painting once the print was done.
EDIT
i have made a version of the model with the woodgrain, it is a very high resolution model, right now its available at shapeways, http://www.shapeways.com/product/5GKBXY3Y4/majora-s-mask-hd-model-with-woodgrain-detail

EDIT
the wood grain model is now available for download

Print the file facing upward with support.
i used simplify3D and uploaded the .factory file for my profile for use on a flashforge creator. i set the layer height to 0.1mm, rectilinear infill at 30%, 3 perimeters, 3 solid bottom layers and 5 solid top layers. support was at 50% density.

the thick top layers should allow you to carve the wood grain to a good depth without exposing the infill.