I don't know what your problem is. I've never had anyone screw up on this job like you.

我不知道你什么毛病，我从来没见过像你这样把事情搞砸的。

youdao

I've carefully mapped this out, so don't screw it up.

我已经仔细计划好了，千万别弄砸了。

youdao

The day of the proposal, I texted a few friends, "This is a big day. I hope I don't screw up."

在求婚当天，我发短信给一些朋友：“这是个大日子，我希望自己别搞砸了。”

youdao

"Everyone realizes, 'Hey, don't screw this up, '" said Bucky Waters, a former basketball coach at Duke and West Virginia.

WSJ: Rick Pitino vs. John Calipari: The Last Bastion of Loathing

When you do something like this there is a chance, albeit a small one that you can screw up your device- if you're worried about this, don't do it.

ENGADGET: pt's "how to Tuesday" Overclocking your Pocket PC