<human>:  How can I learn to paint a portrait?
<bot>: First, you should find a good reference photo of the person you would like to paint. Spend some time studying the features of the person, noting the shapes and shadows of the face and remembering how the proportions of the face look as compared to other features.2 Next, choose the supplies you will need to paint the portrait. You can use either traditional paint and canvas or digital mediums. Make sure you have the right brushes and other tools you will need.3 Then, begin sketching the portrait onto the canvas or screen. Emphasize getting the proportions and lines of the face correct by referencing back to the reference photo.4 Once you have the initial sketch ready, begin adding color and details. Start with the lightest color, then work your way to the darker shades while considering the shadows and highlights of the face.5 Finally, refine the painting to bring out the best. Add small details and adjust the shadows and highlights as needed.