A slightly wider image would keep this from feeling so crowded and a touch too tight.
However, it's still a good shot, because the detail of the gate tends to draw the eye further into the picture. The depth is wonderful.
I like the sense that there's something magical behind that gate.
The gate is just right where you have placed it in the shot. I think this might be tricky to shoot in "landscape mode because those trees might be leaning inward by the time it gets out of the camera!