I think your photos are great!! Keep practicing and maybe take some classes or read some books. Keep it up! What you need to do is add more contacts and put your photos in groups. When you put your photos out there you get a lot of feedback without having to ask for it.
I'm going to add you as...
P - Program Auto: in this setting you can control all the other settings (ISO, white balance, etc.) besides aperture and shutter speed.
S - Shutter Priority: in this mode, you can control the shutter speed and the camera will automatically change the aperture settings accordingly.
A -...