Most of the low-poly hand can be built with a combination of two tools—Extrude and Scale. The steps I use to get started are as follows:
- In Edit Mode, click on the Face Select icon. Right-click on one of the corner faces at the back of the cube, one of the faces that will become the rest of the hand. Holding down Ctrl, right-click on the other corner face at the back of the cube. All the faces in between should be selected as well:
Selecting faces to extrude.
- In the Tool Shelf on the left side of the screen, make sure you are on the Tools tab. Click the Extrude Region button. Alternatively, you can hit E