I think it's a beautiful video, Marcio -- great images, nice font choice, and I like the opening slide of the couple viewing your framed, hanging, photograph. I also like that you kept the production short, like a TV commercial or film trailer. Good stuff.
I really like the music choice, too, as your work seems more dramatic than meditative, to me.
You should add a link (or links) to the description section under your video, making sure at least one link is above the fold, so a viewer doesn't have to click 'Show More' to find it. You might also add requests to subscribe to your videos and join your mailing list, and a copyright notice for your images.
I've found videos to be a wonderful marketing tool and have had several sales, just this year, coming directly from YouTube viewers. I'm committed to posting videos more frequently, and plan to add at least one or two new vids each month to my channel -- also adding them to my blog and Twitter, FB, etc.
Good luck, Marcio! :-)
My YouTube Channel:
https://www.youtube.com/art166wj