- Use Dodge Tool to lighten the hair and Burn Tool to darken.
- Copy layer with hamster, place it under this layer, choose Edit > Transform > Flip Vertical.
- Move a layer below.
- Add Vector Mask, fill it with linear white/ black gradient, just like in the example below.
- Insert a nose texture, process edges using soft Eraser Tool.
- Draw moustaches and eyebrows, using a round brush 2 px.