I'm a big fan of patterns and form, and I'm always listening for these in music. I found the pattern of four notes and a rest here appealing, even lulling and hypnotic, and I think I know what you were going for. I agree with both of the previous posters, however, that adding variety with the the judicious use of dynamics would add greatly to the effectiveness of the piece. I saw in your reply to Gustav that you are happy to have him add dynamics at his discretion. Was that your intention all along? If so, I can certainly understand that.
I see also in your catalogue here that many of your works are for solo instruments unaccompanied, and I find this intriguing. Is there a particular reason why you prefer this?
Listening to interesting pieces for solo instrument like this make me want to try it myself!