Not bad at all for your first three birds...the first pic is kinda hard to critique because I can't see it that well. I struggle with pictures too so don't worry lol. Maybe turn the head out if going for a flushing pose.
The dead mount doesn't look too bad at all for your first. Dead mounts in my opinion are hard to pull off without making the bird look like it's dive bombing so to speak. Yours actually has some gravity pulling on some things so you are on the right track. The biggest thing I see is it looks like the wings are either wired to far back or you have the wing wires bent to far.
In the third pic the wings are to far forward and I would rotate his head so he is looking straight. Good job on your first birds.
"suppose you were an idiot; and suppose you were a member of congress, But I repeat myself".- Mark Twain
"Go to heaven for the climate , go to hell for the company".- Mark Twain