#valcairi's tutorial

How to do a perfect  Circle

first you have to select the linework layer and the curve tool

click once where you want to start your circle And press the "delete" or “end” key to rotate the canvas. Click every time you rotate and don’t move the mouse.

nota: En español la teclas se llaman “supr” y “fin”

Click twice at the end to finish your circle.

Paint Tool Sai tutorial #1

Preserve opacity:

Clipping Group:

Selection Source:

Note: You have to configure the cube or magic wand with the purpose of selection source 

Bonus