Methods of drawing

This is a quick experimentation sheet that I did to experiment with the raw concept of my angel in different ways of drawing. I really like the mark method. It flows and adds a feel to the character, the form angel I don't like i feel that it is too difficult to determine what it is, however I like the simplicity of the line.
I do like the single line drawing style but I don't think it works in this case because it is too detailed, maybe if the form and single line was mixed together it would have been a better image.