The difference is very little. ^_^

A bit es un poco A little bit es un poco poco

Is there a difference between "a little bit" and "a bit"? --> I guess it's the in the urgency of something (or at least how it sounds like when used in some sentences), for instance: John: "Are we going yet?" Amy: "This will take just a bit." (says this while putting on her eyeshadow) John: (looking at Amy while she continues to put on her mascara, her lipstick, her blush on..) John: "How many more minutes?" (sounding impatient) Amy: (while putting on more face powder) "Just a litttle bit more, honey." And finally, after an hour... Amy: Honey, come on, wake up. We'll be late.

Just a tiny bit!

a lil difference :P