Making a Good Youtube Video?

What do you think are the proper steps to follow making a good video that will also rank well on youtube using only camtasia? I'm promoting my personal services site. How long should this video be? I was told 30 seconds is good but I noticed my competitors have 1 or 2 minute long videos. What kind of tags should I use besides my keywords?

Make a video to demonstrate the benefits of your services and why they should call/email you right now. My sales videos I like 1:30

I like short videos, under 1 minute if possible. It's easier to get high retention views and get people to find out more on your website. Use your keywords and url in the video title, and write some original content in the description.

I prefer videos that are 2 minutes or less. Honestly, I get sidetracked and lose focus when watching videos that are long.