Show & Tell: My Portrait Entry...

Hi guys! I thought I'd share some of my artwork with you for a change. Here's a portrait I painted of my sister, for a local portrait competition that's run every year:

I actually ended up winnning the Junior Popular Choice Prize, which was nice. I worked off a photo I'd taken of her on the trampoline one sunny day last year.
I then posterised it and played with the colours in PhotoShop before mapping it out on the canvas. It took me about 6 hours, which is quite good considering the size (about 30 x 20cm). I actually wasn't planning on entering, but decided to at the last minute, which meant a few late night's- worth of painting! But overall, I'm pretty happy with it. What do you think??