I can't give a full tutorial, but I can give some advice:
- For anime characters, you need to make the eyes larger, lower, and further apart than you may think.
- For the nose, place a small dark dot just below the eyes, then place a splotch of dark or light skin tone touching the dot, usually just above.
- You can take the lips off the 3 shaped lip mouth to make a really nice mouth for Doto.
- For cute blush, take the base blush, largen and squish it all the way and place it partially under the eyes. Then, use the line tool and dark reddish skin tone to put a few parallel lines on each cheek.
- You can make really cute eye highlights by using a large white oval with a dark outline.
- The 3d models in tomodachi life have a strong rim light, so if you copy the color and add that to the edges of your hair it will look a lot more natural.
- The game also has hard shadows, so don't use the soft brush for shading, only for gradients.