I love this model, so I edited the STL and made it stand up straighter, tweaked the mesh a little to reduce the "webbed finger" effect in the middle if the V, and tried to heal up the scar on the palm next to the thumb to minimize it. It is printing like a champ, and easily prints hollow so you can wear it on your finger-thumb. The original model size was tiny, so I scaled it up so that e default size is 199mm tall, about life size. In the pictures, the silver one is the original model, all others are the remix.
I have printed it hollow at Z=100, .25 layer height, 4 perimeters, 0 top and bottom layers - works well on a thumb, z=75 .25, 3 perimeters - good for fingers, and z=50 .25, 2 perimeters - too small even for my pinky (yellow). The full sized one has 10% infill, but I'll bet it would also print ok hollow if you use 4 or 5 perimeters.