Tom could you give the guys more experienced than I your settings for each shot,it will help them help you, your shutter speed could be slow your dof too small ,it might be something to do with how the camera AF is set as pointed out above it could be you pulling the shutter but most of the images are not really sharp,so finding out if there is a common cause might help you get moving forwards.
Horse (eye) is the nicest for me you have an eye level POV and nice bkg( background) but maybe he could be moved off center a bit more. POV is point of view Tom,really try to get to eye level of who ever you are shooting like your doggy dog mate. You are looking straight into his eyes and him looking back into mine. Hence as the viewer he appeals to me more than the robin who you look down on.
Mate I'm not experienced enough to help much further,I'm just learning like you are. I just wanted to say hey and try and get a bit more help for you really The settings you put into the camera are very important.the lenses used equally so,The more info you spend time giving will allow for more detailed replies back. The experienced will know for example that x shutter speed is to slow for x picture,but if you don't give them the details then they haven't got that knowledge to help you with
Stu