He needs to chill out
Blues can mean a lot of things. In this case it was just the mood of the song, not some technical chord structure and progression for soloing off of.
The song was slightly repetitive, but you did mix up the main melody enough to keep it intresting. I liked the drums, but the bass could have been improved slightly. Instead of playing the same note as the root position of the chord, you should have the bass go up and down the scale or create some harmony. THe song in general needs some more diversity...thats all.