I have to say, these ones took me by surprise.
After watching the first replay, which used an MP starter and was overall pretty stiff, I really did not expect much better. I then clicked on the last one there, and was impressed by some of the hits and the flow you had in the middle. Sure, some of the hits were grabby or slow, but others had some good speed and accuracy to them.
Now, I'm not saying these are flat out amazing fantastic pro replays, but they do show a ton of potential. You do seem to have the hang of moving and where to hit uke, but could really work on how you start replays (memorized starters aren't as valuable in SP as they are in MP) and how to keep your flow going.