Tail shots are always risky to upload because of motive. This one might stand a chance with some changes, but not as it is now. You need to have the entire tail in the picture, as you've cut off the front of it in this crop. Quality-wise it should be ok. Give it another go with the whole tail in it.
Here's an album by user "YYZflyer that's full of tail shots. This should give you a better idea.
www.stellaryear.com: Canon EOS 50D, Canon EOS 5DMkII, Sigma 50mm 1.4, Canon 24-70 2.8L II, Canon 100mm 2.8L, Canon 100-4