Photoshop Blending Practice

Below you will find an image of some attempts I have made at blending in Photoshop.

Blending in Photoshop is when we use a certain brush to rub into colours at a low opacity to create a blending effect. It is very useful in art work such as my Skull Drawing as it creates areas of colour that show light and dark. Overall I did find it difficult to blend the colours but with the understanding I have gained and plenty of practice I feel that I can become better at this type of art style.