pipkiksass
Veteran
Practice practice practice f2l. Your times should be (for 30 second average) about 3.75-15-5.625-5.625
I love this - 'about', then times to nearest milisecond!
Agreed though. I got down to about 24 seconds before I had to start worrying about anything other than practicing F2L. Now cube rotations and lookahead are the main things holding me back.
The best lookahead guides are the OP on this thread and Colin Burns' tutorials on Cubing World, but I wouldn't worry too much about looking ahead just yet. Practice your f2l, look up awkward cases that you execute slowly. Practice some more. There's nothing wrong with stopping mid-solve and looking up a better way to insert an F2L pair, I do that regularly, it's much better (IMHO) than just looking at F2L videos on youtube and thinking 'must remember to use that in a solve'!
Good luck. I never thought I'd be sub 30!