Upload & Sell: Off
Welcome Landpirate, your off to a good start. Everyone has to start somewhere.
You are looking for feedback so here is some.
First, don't place your subjects dead center in the frame unless you are trying to do a portrait. The last photo is more interesting because the eye is drawn to the top right corner and nothing is centered. Read about the Rule of Thirds.
Second, when reviewing your photos, look critically at the focus. For example, in the first one, I'm not seeing anything sharp. I don't know if its the shutter speed or what.
In any case, keep shooting. Your doing fine