Thank you for your invitation Akinchan, I'm happy to have you as friend. Your drawings are stunning and I am sure I can learn a lot from you. I love colourpencils and made some very nice drawings, but your portraits are awesome. I love the smooth and beautiful skintones, and your graphite drawings have somuch 'colour' in them, you have great skills.
Thank you for your kind comments, I painted that some time ago and now I can see many ways to improve it.
Don't be scared about colour, I've heard it said many times that as long as you get the values right, it doesn't matter if the colours are a bit off and with your charcoal paintings you should have no problems
A book that might help is Betty Edwards "Color" its available on Amazon.