I would definitely add some sort of outline/drop shadow to the wording at the bottom, as well, maybe shrink it a bit since seems a bit close to the edges.
The ABV 6% I would consider halfing the size of the font, and changing to something more simple like Helvetica or Arial, perhaps directly below the "ON" in saison and as wide as the "ON".
As for the Yellow... I think yellow works, matches the gold in the book spines... but it's too 'clean' of a yellow. Are you using photoshop?
If so, an idea would be to use the eyedropper tool and just start clicking around the image on top of all the yellows with the type actively selected. What this does is it will pick out yellows in the photo and help keep the lettering within the same colour scheme.