You posted an IMAGE of it, which isn't really helpful. In this case I can tell you what you did wrong: You didn't read the freaking error, it says all you need to know:
This Version of FML is build for Minecraft 1.4.7, we have detected Minecraft 1.4.6
and then, even in CAPITALS:
LIKELY YOU HAVE AN INCORRECT VERSION FOR THIS FML!
How hard is it to understand that?
Owww, I didn't knew there was a minecraft 1.4.7 And before you said something about the log, I didn't knew there was "human" text in it. Sorry! But thanks a lot then! Really!
Lets go search for 1.4.7 then...
Wait, there is no 1.4.7 -.- then I will go search for 1.4.6 Forge ModLoader
Again, thanks a lot!