Sai layer property with the multiply function. You can use it to darken areas or even saturate the colours. One good way of doing your shadows without affecting your flat colours. You can even do the shadow and tones of the image first and then add the colours underneath the layers later. There are alot of opportunities and different ways of using this simple tool.

White acts like a cancelling affect. You can use an eraser but be careful as other certain techniques may require you to only use a white brush or an eraser to work. Try experimenting and find a perfect and valuable method of your own :3


Personal note:

Alot of the time I think it is pointless to give these cause everybody knows. But then again how did I come to know of it? I was definitely not born with the knowledge? So I guess I will throw some random tutorials if you guys would like some hehe

What ever you would like to know about how I do things, I would not mind sharing my secrets hehe. Whether it be ideas/ideals or techniques, I am willing to share cause people will always add and use them in their own way. I believe I am not a master of anything but a concoction of alot of random things hehe. So my methods are by no means the best. It is just a means to help you find the way you can express and draw the things you want with the least hassle hehe I hope....

Let me know what you think :33