When applying fondant (and sometimes I'm clumsy!) I accidently strike it with my fingernail or have some other small tear. What's the best way to "repair" it? I've tried dabbing water and smoothing it. Does anyone have a better way?

Hmm, its quite difficult to 'repair ' it, without leaving some form of seam or join, You can try smoothing it over with some white fat, But i find it still leaves a join. I usually either choose to cover it over with a decoration so you cant see it, Or start over lol x

You can also "paint" on some thinned RI that is the same color as your fondant to hide any tears. This is especially helpful when you've already decorated the cake and can't redo the fondant. HTH

I sometimes soften fondant with the heat of my fingers and then apply it to the flaws.