Please read before commenting if you are asking a question or making a suggestion.
Character: Yuzuki Yukari
Hello! This is a response to requests for Yuzuki Yukari and a coloring tutorial. Below is the technique I usually use to color a sketch without lineart.
Paint Tool SAI:
Airbrush (default low opacity)
Brush (default with custom texture)
Watercolor (custom for soft blur)
Watercolor (custom for sharp blur)
1. Sketch: New Normal layer, brush tool
2. Preliminary color: 2 New Normal layers under sketch (one for skin, one for everything else), 3 watercolor tools (one to put color and 2 to blur), airbrush for the skin, 2 shades used for each color
3. Eyes: New Addition layer above sketch, watercolor for purple and pen for white. If I am posting the picture on my blog instead of DA, I usually stop here.
4. Hair detail: New Normal layer above sketch with 4px fringe, pen and brush to draw, watercolor to blur. Chose only one color, and used different brush sizes. This step was very important to me because I wanted to balance the eyes using the hair. Most of the time, I use a lot of brush instead of pen, but I used mostly pen this time.
5. More hair detail on top layer: Eyedropped other colors from different parts of the hair to use. Pen tool only in small size.
6. Shading hair details: Lock the hair detail layer and shade it. Chose an already existing color.
7. New Overlay layer above sketch. Used pale yellow with watercolor.
8. Watercolor: Added dark purple in the shadow areas on the overlay layer.
9. The eyes looked too simple so I redid the coloring with brush, watercolor, airbrush, and pen.
10. Locked the sketch layer and colored it with different shades of purple. I colored the eye area with a saturated purple to amuse myself. Amusement is needed to maintain interest.
11. Added texture. Texture is great for messy styles because it instantly makes the messiness look intentional. I do not add texture to skin. Added some clothes shading with 3 watercolor tools (one for color and 2 for blending). Changed the purple overlay in the shadows to blue. Softened some shading in the hair.
Optional 12 in Photoshop. Cleanup with the eraser and some more clothes shading. Added some fat hair on the hair detail layer with the brush tool.
The Photoshop step afterwards is very important, sometimes up to 50% of the look would be changed. I only use the airbrush and custom brushes in Photoshop.
After this, I just edit and clean until I feel like it's done or get tired of it. Editing may take from a few hours to a few days. But there is no new technique so I won't cover that. I plan to finish painting her sometime next month.
Please ask if you have questions or would like to see something else.
As always, feedback is much appreciated.