OK, viewed it now.
How experienced are you at freediving? If you feel comfortable you might find it easier going deeper, it's a pain when you keep bobbing up to the surface. Have you had a course on underwater video or read any books? Jim Churches one is a pretty good one, old, but goes through the motions of breaking your time down underwater to get the shots you need to create a story.
I think if you are expecting to get footage like people shooting a 20K camera, using a rebreather and in one of the worlds top diving locations you are always going to be disappointed if you are snorkelling in green-ish water.
That's not to say that you need the expensive stuff or perfect locations to get good footage, but it is a lot harder. Our very own DeanB is collecting a bucketful of awards for his short film about freshwater Pike (admittedly shot on a fancy HDV camera), but he spent hundreds of hours getting the footage for a short film, taking his time and waiting for the correct weather and behaviour to get the shots.
I think you may be expecting a little too much too soon. Enjoy getting the footage, and maybe next time look for a friendly subject, and when you find it, shoot lots of angles and try to find the right settings on your camera to get you the footage that you are seeking, once you have lots of footage of one subject you may decide you want to invest in some more expensive editing software.
1. My computer settings and how I save it with Windows Movie Maker - it asks you how you want to save it? save as an avi file for your own playback on your computer, wmv or quicktime for use on the internet
2. Is it just WMM itself? maybe
3. Is it Windows XP?
4. Should I have saved it to DVD and then it would be better?
5. Is it my settings on my computer screen?
6. Is my computer too old?
7. How do I get more clarity when it is finished and I want to save it? you cant really add clarity to footage