Like you pointed out, some of that grooming you are going to do isn't going to take some of that not so smooth look out. It looks like you could have dried the bird a bit longer. I don't stop drying the bird until all the downy feathers are fluffy. I may need to spritz the bird's interior skin with water every once in a while to keep the skin from drying hard like leather, but it doesn't hurt a thing to do that. I want my feathers dry, and my skin damp if that makes sense? I leave the head for last, and really don't hit it with the hair drier until I'm just ready to glue the artificial head on. I still want the skin slightly damp in this region as well, just the feathers dry.
On the feet, I would cut individual triangles pieces of carding for the webs, and use a paper clip placing the clip over two triangular pieces. One on the top, and one on the bottom of the webbing. I do this after I have injected the feet with Master's Blend, and after I wash the entire foot down with acetone. I always put the cardboard carding grey (non painted) side on the skin. You can get paint transfer if you use color side down. I'm referring to cereal box type cardboard. The Euro pins are something I would avoid here.
When sewing, make sure you test fit the area that needs stitching. If you move it around enough, you will see there is certainly a pattern to follow. This keeps the feathers from torquing, and adding that non smooth look. If you have a feather out of place after stitching, simply pluck it. It will look way better missing, than out of place.
I don't know why it is, but a very common mistake new taxidermists do, is try to attempt a tough pose first. I know it, because I did it on my first few. You might have an idea of what you want, and then the bird dictates otherwise? Either way, a one legged standing mount isn't the easiest undertaking. You're probably thinking less wires, and therefore less work, but getting balance to look right is tougher than it looks. Your balance isn't too bad though.
The head looks good. The tail although slightly more fanned than I would imagine in real life, looks good too. I can't comment on standing birds and their anatomy, because I don't do standing birds. I guess I will have to do more, but not my preference, and I just don't have room for them. Wall space? Yes. Table space? No.
I don't think the blue will dry correct, and again, painting is something I suck at, so not much I can say really, with no room to talk.
Most importantly, I'm critiquing a second attempt. Your bird looks awesome for that! If I was going to suggest one thing, it would be, stick with a flying bird next, and keep on keeping on. The best move you made was to ask for critiques. I'm a **** when it comes to that. I know what's wrong with my stuff already, and hearing it from someone else only weighs more heavy on me! You on the other hand are leaps and bounds ahead of the average person if you can accept criticism for what it is, which in my opinion is a positive thing, and people like me take it as a negative!