They all look good. I think you did a very good job. Cork it my favorite material to mount on. I have one observation though. I see that you live in Florida. The Florida rainy season is going to start soon. If those orchids are going to be outdoors, the sphagnum may stay wet for many days at a time when it starts raining. That could lead to fungus problems. If you keep your orchids under a protective roof, it won't be a problem because you can control the moisture. I grow my orchids outdoors in South Florida and any orchid with a pseudo-bulb (cattleya, oncidium, encyclia), I mount bare-root. I use sphagnum when mounting phalaenopsis but I put the moss between the plant and the mount so the roots are on top and they'll get air and light. If you're going to mount another cattleya, try mounting one bare-root with no moss on cork and, after a few months, compare the results to the orchids you mounted with sphagnum.