Maybe read the beginners forum and solid builds- thread before making 100000 "Wat to do next how I shot web?!"- threads. Yeah beginners help & guides, stickied thread "Solid builds". Go...
While this SHOULD be in the beginners section, I don't see any real issue with threads like this.
To OP:
21/18 all the way!
My current build is:
21/18
7 PS
7 IF
3 WM
6 ATH
99 2 hand wpf
98 pole wpf
I can easily use any 2 hander or polearm with this build (wpf does next to nothing right now, so having a little less doesn't matter.) though my primary setup is a Pike and Langes Messer in 2H mode with either a medium armor setup (around heraldic mail level) or heavy armor (around Black Armor level). My alternative setup is a Long War Axe, Crossbow, and steel bolts with either of those armor setups.
How to use a build is really up to you. Personally I like to use circle-strafing footwork combined with jump attacks and holds. It took a while to learn how to do it properly (circle strafing incorrectly is a great way to get yourself one-shotted), but it's hella fun. Backpeddling is just... boring, and reach games aren't really my thing.
Practice different footwork styles, don't just copy what you see other people doing. If you do something that people have seen a thousand times before, they'll just anticipate you and the maneuver will likely fail. Therefore, try things out. Sometimes you'll die miserably, other times you can kill players with much more experience than you.