I know how hard it is to draw with a mouse. Take advantage of bezier and line when you can (though don't overuse it) The best way to do lines is using the airbrush, making semi thick lines then using the erasure on low flow and opacity and shaving the lines away. It gives you much smoother lines (and make sure anti/alias is checked) Not bad so far Manyan, just don't worry about taking your time. The more time you take on something the better it'll come out and the better you learn. Welcome.

Thank you both of you very much for your kind words and tips! ^_^