I'm not used to critiquing things, so I wanted some practice.
Okay, I love the vector style in this, it makes it actually look like a fantasy themed pic. You used great techniques and brushstrokes in this that made the picture come alive. It left a big impact on me, I was always drawn to the vector style and this made me like the pic even more. It does remind me of stickers a little bit, but it looks more like a fantasy drawing (the background mostly did make it look like that)
Anyway, I don't see much improvement needed. You did a fantastic job.