Nice guide. I'm sure it would be helpful for those who are just getting started up in drawing.
I would personally lay off giving advice until reaching a higher level of.. excellency in drawing. Or when able to achieve pieces such as these. Thought they are not the best around.. XD
Don't think im trying to put you down, or my message the wrong way. It's a very good thing what you are doing here; helping people who are taking their first shots at art, but it might be better if you did one you have more experience
