Is that a swingset on blacktop?
Very old school.
This country went to hell in a handbasket when we went to kid safe playgrounds.
As to your question, I think you started the project with that irregular sheen pattern, for whatever reason, so it's not so much what you did. It's got a very definite pattern. Was something there that blocked the sun from hitting those areas and draining the sheen from the previous finish? Looks almost identical to the window size and shape. I would give it a couple of days to dry/cure before I did anything else to it. You may need to do a full prime with an exterior underbody to level the sheen. Did you prime at all?