You're taking challenges way too seriously! Just think of them of a more fun way of playing the games and the updates are just to show that you're still active in the challenge! :)
If you don't wanna post a lot of screenshots or write a lot of details, then don't! You don't have to :)
And I'd gladly give you a team but I'm already doing 2 different challenges and one is on hold because I'm waiting for someone to give me a team for it :P
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Edit: I saw people ignore your sign up sheet and it's been days since you didn't get replies, so I signed up myself and gave you a team. Hope you like your team, It's a nice team, have fun :)