The logo, colors and background are lovely as individual pieces...but I think if you want to make them look "together", you could remove the horizontal bar and just have the logo on the damask background then maybe add a grey border to the whole banner or a grey line on either side of the logo.
The logo and the background are quite ornate, so I feel the horizontal bar behind the logo is a little distracting.. It looks nice on your blog though.. since the bar is below the logo..! very nice infact :)
(above is just a suggestion.. hope you don't mind!)