A really nice set of wedding photos with very unconventional compositions. I really like #7 and especially #9.
I think Pentax seems to take slightly soft pictures, which is not a bad thing, but I also usually like more definition so I'll routinely sharpen up most of my pictures. I'd suggest Topaz Detail for really nice sharpening effects. My only other comment is on #5, where I like the composition but I think there is too much highlight in the bride's and especially the groom's faces. I would try to darken them slightly, just enough to distinguish them from the background wall and lights.
There appears to be a certain "look" that's in fashion right now on the photo blogs, with lots of saturated color, very sharp lines, and dreamy lighting effects. Some of these are really fantastic. But your pictures have their own look and appeal, so I wouldn't necessarily try to imitate the style of others. If this was my wedding I'd be pleased with the results.