Was trying to look up this rhyme and found themagicgate.com and got even more confused... The sunset and colors are nice but I don't really get the point of the gate and the items behind it. Also the horizon not lining up inside and outside the frame is a bit bothersome to the eye. I know perhaps it was meant to be a different magical land, but the landscape I think is too similar to the outside to pull that off properly.
This image challenges me, and is an example of when I'd like to know more about what's behind it. I don't get the connection among a kangaroo, a kayak, and a road, or how any of them are magical or would appear behind a magical gate. So the story I get instead is just "random stuff behind a gate."
Love the door and the road/scenery (even if the scenery doesn't match up). Don't get the kangaroo and don't like the kayak (or whatever that red thing is, it just looks so out of place).