Need Help - Newbie to video production/editing

[SpeedWerksHD]

Hello! I have started a small YouTube channel and need some advise/help. I'm not very good with Premiere Pro and post-production stuff. What can I do to make these videos better? (Sorry they are so long) Unfortunately, out of the 3 camera's I use, one of them doesn't record in HD. Let me know what you think from a choice of shots, to production ideas/critiques. Thanks! I really need some help here!!! They are not they quality I want. They seem too amateur. Maybe it's my equipment??

https://www.youtube.com/watch?v=Mh32GjLbZw8

https://www.youtube.com/watch?v=bw1ksjzHQhA

[davexnet]

There's a lot of block noise - perhaps your original video was too low a bitrate.

[SpeedWerksHD]

You could be right. I'll have to check that out.