Watercolour is one of the most popular forms of painting - mistakes can be easily corrected and you needn't be particularly precise in your strokes. This somewhat impressionistic medium is ideal for a first foray into digital painting.
Accentuate the edges: As the image was pasted as a solid piece it will have squared-off edges that spoil the effect. To make the hair flow naturally, draw around the edges with the pencil tool with the fill and stroke boxes set to white and begin to layer around the texture. Remember, it doesn't have to be perfect.
Brush away edges: With the fill and stroke boxes still set to white, select the brush tool and begin to work around the edges. This can be used to soften the edges and improve the perception of the hair flowing. Try using different colours and different perspectives.
Last brush: Select a brush of your choice and raise the point size to around 9 or 10pt. We've used a brush from the Artist palette. Begin to layer the likeness of a coat or feathered boa around the neck and place a few dabs in the hair as well. When you've finished, save your work.
Final checks: Double-check your settings. You may want to increase the diffuse setting or experiment with other filters. When you're satisfied, either collapse your layers or rasterise the image in Photoshop. Save your work. The image should be printed at 300dpi in order to reproduce sufficient detail.