Sheep! - composition critique

[Fotografer]

Your average sheepy sheep!</p>
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<p><img src="http://farm3.static.flickr.com/2803/4108388016_a82c7072c1.jpg" border="0" alt="" /></p>
<p>f/5.0, ISO 200, 1/320sec</p>
<p>Taken with Canon 400D, Canon 70-200mm f2.8 IS + 1.4Teleconverter</p>
<p><a href="http://farm3.static.flickr.com/2803/4108388016_d7baa10827_o.jpg" target="_blank">http://farm3.static.flickr.com/2803/4108388016_d7baa10827_o.jpg</a></p>
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<p>I honestly don't know where to go with this shot. I think firstly it might need a little brightening up with maybe a bit more contrast/saturation just to make the colours stand out a little more (I feel it might be a little dull and flat at the moment). But composition wise I really don't know how I feel about this shot. Its bugging me now and I just can't put my finger on it - do I want/need more background - more sheep - change the positioning of the head in the frame -- what?? </p>
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<p>So anyone got any advice for this one - even if its advice for the &quot;next time&quot; incase that cropping creativly is not an option (and I'm always open to &quot;next time&quot; advice since its means less chance of me coming back and having to crop)</p>
<p>&n