Need feedback on photography?

I'm relatively new to the 'photography scene', i.e. half a year or so. I know I'd never bother to lug around a heavy DSLR so I picked a mirrorless camera (Nikon V1) as my choice. I've kinda picked out some of the better photos I've on flickr, representative of several genres and my optimal (I guess) level of photography?
Are they alright? If not, feel free to explain what changes I could make either during or post-photography? Thanks for your time.

http://farm3.staticflickr.com/2856/8754991739_f08ccd3070_b.jpg

http://farm8.staticflickr.com/7403/8722340279_c2c1611cb7_b.jpg
http://farm9.staticflickr.com/8519/8518759292_6c339ab253_b.jpg
http://farm9.staticflickr.com/8112/8511972023_d9ef4ce004_b.jpg
http://farm9.staticflickr.com/8385/8511993731_24b452f658_c.jpg
http://farm8.staticflickr.com/7435/8723253800_02019fde50_c.jpg
Added (1). -Edwin
1) Hmm yeah I can see how that's possibly distracting.
2) Haha yea I always seem to forget I've hands.
3) Yeah I precisely chose the composition because I felt the sky lent as much weight to the scene as the autumn scenery.
4) Ooh okay.
5) Yeah I think I undersharpened (by default I leave sharpening to zero for raw files).
6)Haha no I was just testing out lowlight capabilities of the V1 in a public aquarium setting.

Thanks for being so detailed, it really helps to have outsider opinion (don't think judging my own photos would be reliable).

-Jorge
Hmm okay.
Added (2). -Jorge
The thing is, with the fountain tilt that both of you have mentioned, the base of it along the 'treeline' is actually straight. If I tilt to make the fountain straight, that would be slanted instead. Yeah I should prob have cropped the scene, just thought it'd lend more colour to the owl.As for the fish hahaha it was actually intended! I named the photo 'Outcast' on flickr!

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