Wonderful image Alexander! :) It feels a little tight though, and a slightly more head turn in your direction would work better. I would be tempted to 'fix' the black blotch at the top. Just draws my eyes away from the Tit. :)
Super light, super sharp, little more room at the tail would be nice plus there is a light spec of something toward the top right hand corner, would like to see the picture posted larger too. Very nice work, could maybe lighten the shadown in the perch a touch too.
Others already covered technical stuff...I just love this cool looking little bird...first time seeing one. The perch and his positioning on it are nice.