I didn't mention any guidelines because my thoughts on the progression was going to be:
2d shapes (drawing from photo) ->using diagramatic lines -> drawing shapes from life using what you learned -> guidelines for proportion
It's skipping things in between that will create bad habits. I pointed out things that were out of proportion, it's to be expected, because drawing from purely seeing shapes would take a long time to master, but if you can get the idea behind it, you'll know.
And copying someone else's style? I prefer to think of it as influence.
april-coppini-art.jpgThis is an observational drawing using diagrammatic lines. vertical and horizontal lines are used to line up things that are supposed to be lined up, so you can find proportion. it can be used on photo or real life. It's a method for measuring your shapes.
Guidelines are a bit of a step up, and I'll be a broken record and say that I'd like for you to understand how you see first, but if you want to get in on it right away, it's up to you, Seira.