Next Stop

First thought: YEY! TARDIS! (No, not a Whovian at all...)

If this TARDIS has a front (with the sign and keyhole) I would have let that face front I think. If this model doesn't... pity, but I guess you can ignore that first bit there then <img src="e.deviantart.net/emoticons/w/w…" width="15" height="15" alt="" title=" (Wink)"/>
The background is distracting the viewer a little bit. I think the fact you can see the ground, plants and a bit of sky altogether makes it feel like a separate image. I really like the idea of the TARDIS standing on a cliff, but then I'd expect to see nothing but sky in the background. Or, if on some alien planet, the huge plants of that world (your garden?) on their own or along with some sky. No dirt if you know what I mean.
Finally, perhaps the image would be a bit more striking if made a little bit... grittier... by toning down the colours a bit or making the shot a little bit darker.

Of course that is all just my opinion. In the end I think it is a very nice photo and I would love to see more pictures of this TARDIS popping up in unusual places. Keep it up <img src="e.deviantart.net/emoticons/b/b…" width="15" height="15" alt="" title=" (Big Grin)"/>