Personally, I think flowers are a difficult subject to draw. I have a few hundred flower pictures in my archive. When I get ready to draw, I always pull out a flower picture first. It could be the composition that catches my eye or the the colors. Then I put it back in my stack and pull out another picture not related to anything floral.
Today, I decided to grab a flower picture and just draw it. I started with a loose outline of the flower. I then sketched in the darkest values first. The background came next. I could have done more, but less is better. I like how this one came out. My motto: Just Do It!
I left my remaining loose outlines on the paper. That way you can tell where I started from and it also lets your imagination run wild as to how you would finish the flower.
Paper used: Canson sketch paper