Ahh, Delicate Arch! I went there a few weeks ago - I love this place. Well, the whole area, really. This is a nice shot - you've certainly captured the beauty of the arch. The colours seem a little oversaturated on my screen though, which makes the image feel kind of trippy. That could just be my screen though - not sure. If I may, I'd suggest leaving a touch more space at the top of the frame (assuming this is cropped - if not then nevermind), just because the top of the arch feels a bit too close to the edge...though that's just me.
Thanks, It shouldn't appear over saturated. I work with two monitors to ensure clarity and color. The colors were really rich in the first place. This is not cropped either, I wanted to include the curve of the basin beneath the arch. Unfortunately my lens can only be so wide on a crop framed sensor. I do wish I could add more of the sky as well.