I agree with the last OP..that last two could have been amazing photos, but the wall is a bit distracting and for me is the focal point. The first image I like and I dislike--I enjoyed the creative processing you did but I believe it may have too much contrast in comparison to the couple, and my attention is the grass, not the couple. The overexposure in the highlights in the second image I feel work for your capture, it brings more of their personality out. They seem like a fun loving couple. The third image I enjoy actually quite immensly, and feel it is your best photograph in your series, compositionally it may not be strong BUT the fact that you freely captured how much fun the couple has adds to it. That's what engagement photos are actually--they aren't who can take the most amazing photograph; but its how you capture your clients and how you can form a story of them and who they are in your captures. All in all--not too shabby but there's always room to improve---no ones god's gift at it.