How do I get sub 20?

[J-B]

I've been cubing since two or three months, and i learned the 4 look CFOP, that i still use. I am about to finish PLL, (i have to study only R and G perms.), but i am stuck at 27 seconds, with some good scrambles at 22.
I am able to plan the entire cross in most of the cases, and i do it in about 5-6 seconds, i usually do F2L in about 15 seconds. Then the LL in 7. I am trying to get faster, but i seem stuck. Some tips to get better?

 

[Ryann15778]

哇，我真的很佩服你！我玩魔術方塊兩三年了，成績一直徘徊在40秒左右。最近我在學習ROUX解法，平均成績剛過50秒，但我還是無法彈性運用F2L。

 

[ACubingDude]

finish learning PLL, and prob watch Jperm’s advanced f2l tutorial. It brought me from sub-30 to sub-25

 

[J-B]

Thank you both and good luck for the ROUX method to Ryann15778

 

[Michael Wimberly]

Try to work on lookahead during F2L, it is very important for sub 20. Also finish learning PLL. And for cross, don't just try to plan the whole cross in inspection, but also try to get it in 8 moves or less every time.