Meh.
The general idea was great, but the materializing itself wasn't good. You said "PS - Not to be taken as a serious blues.", so I'm giving a fair score according to that, I guess.
Some pointers (If you want to get serious, that is) -
- Get better ways to record yourself. There are tons of USB mics which sound great and are really cheap.
- Record each instrument individually. You know, that's how the pros do it.
- Rehearse a bit before recording, unless you're looking for an imrpov track.