He managed to louse up the entire presentation at the last minute
Don't louse up this opportunity; it's your last chance
Someone has really loused up the accounting records
I tried to fix it, but I think I just loused it up further
We were so close to finishing, but then the power went out and loused everything up
She was afraid she would louse up her job interview
The bad weather really loused up our vacation plans
He has a talent for lousing up even the simplest tasks
They don't want any mistakes that could louse up the project deadline
Be careful not to louse up the delicate mechanism
Did you break the printer again?
I think I louse up the paper feed.
We really need to get it fixed.
Don't louse up this important project
Do not ruin this important project
Be careful not to spoil this important project