The elliptical selection I had made of the face reminded me of the shields carried by Zulu impis. I selected half of the face, duplicated and flipped it to create a symmetrical shield. I desaturated it and used the Render>Lighting Effects filter to give it some texture. I then recolored it using a Hue/Saturation layer and added the stripes. I used free transform to lean the shield against the rock and manufactured the spear from a long tapering rectangle filled with color, noise and a gradient. The 'grass' in the foreground is a combination of a pattern fill and grass brushes.