I really like the right half, left half needs a bit more work imo.
Don't take this too personal, just some cnc about the things I would change if I could:
First of all, I don't know what tool you used to cut out the render, I'm guessing magic wand or just similar color selection with some tolerance to get rid of the white but in this case I recommend to use the vector path selection to make the edges a little bit smoother so you can avoid the rended looking pixelated like at the ear for example: https://i.gyazo.com/5c16d7a92d4e258b2e2cafa5d6a8e5f2.png
Secondly, there's a little bit lack of consistency: https://i.gyazo.com/5272604025a9d991f094a1d9995256d1.png on the forehead you blend it slightly but at his mouth there's only a rough transition.
And finally: https://i.gyazo.com/7c0690f25b7d401f80dcf3c2d4b4074b.png here you should either go for a completely green landscape without the street or make the street gradually blend with the landscape because the line is too straight compared to the rest of the design.
These are just the things I personally would've done different but it's of course up to you how you create it since it's supposed to represent how you feel and not me.