The video is good, but I have 4 very useful tips for you
1,) If you have a geforce card, use shadowplay to recording.
2,) And in sony vegas use this effects: Brightness & contrast, Levels, Color corrector, If you set the options right, your video will seems so damn good.
3,) Always render to mp4, not to other bullstuffs.
4,) And also check my video: