I have only one entering statement to post about openCanvas, A Artists BEST Friend!
This software is a life saver for any serious or even starting artist, because the realism of the drawing is so close to real life it makes you feel like you're drawing on paper at you're desk.
Plus the ability to use a Tablet makes it even better, pressure sensitivity makes the realism once again so high its just like drawing in real life!.
I personally love this software because as an artist i always wanted some way to realistically draw without having to go clear my desk, get some paper and a pencil, sharpen it Etc, then scan it in, with this all you have to do is move you're hand and let you're mind be you're guide to putting you're dreams to paper (or you're screen now!).
So artists, do yourself a personal favor and check it out at http://www.portalgraphics.net/en/ and start being serious about you're art today!.