My First Time using SAI Paint Tool

I am trying to draw something by using SAI Paint Tool from on.

here is my first art using SAI

After following this tutorial

Beginner's Tutorial 1 - SAI Drawing Process - Sketch
Beginner's Tutorial 2 - SAI Drawing Process - Outline _ Lineart
Beginner's Tutorial 3 - SAI Drawing Process - Coloring
Beginner's Tutorial 4 - SAI Drawing Process - Shading _ Highlights