Onion try-out

I thought of using apple for my painting practice today, but suddenly I changed my mind and tried white onion instead. My first try was not successful and the funny thing was that I was following someone else step by step demonstration of painting onion. I'm not saying that there is something wrong with the demo. Being challenged, I grabbed a scrap watercolor paper and used the other side to sketch my own onion based on the actual one and on my own way - see above sketch. Next time I'll try this on a clean watercolor paper. I'll continue doing this exercise of painting simple subject because I believe this is one way of improving my technique. And of course I'm also learning a lot from you, my blogger friends.