3.5e How to continue this build for my Crusader and how do I make it better?

[BloodSnake'sCha]

Hello guys and girls :)

This is what I have for now:

Human Crusader 4(I think I will go with a Crusader until the end).

16 str
12 dex
15 con
13 int
8 wis
10 cha
(28 point buy+1 from leveling up).

feats:
-Combat Expertise
-Improved Trip
-Knock-down
-Combat Reflexes
-I dont know what to take, maybe stand still.
1-human
2-flaws
2-leveling up
-Robilar's Gambit at level 12

weapons:
-I don't know but I will like a 2 handed weapon(I can get it from material from the SRD).

armor:
-Full Plate(I can get any spacial material from the SRD).

magic items:
Not even a single one.

Maneuver:
-Don't know.

Stances:
-Don't know.

I can use all 3.5e books.
I can't be a spell caster.
I don't know if you guys need more information to help me.
If you do help please explain, I want to learn so I will be able to do it alone in the future.

[BloodSnake'sCha]

I really don't want to do in order to continue and finish the build.

[Telonius]

I'm noticing a distinct lack of Power Attack. As a melee combatant (particularly a 2h melee), this is a feat that you absolutely need. Extra Granted Maneuver is nice too.

You might want to take a look at the Crusader handbook (http://www.giantitp.com/forums/showthread.php?181655-Spirit-of-Steel-The-Crusader-s-Handbook-WIP) to give you some ideas.

[Deeds]

Looks like a standard trip build. But where's the Spiked Chain?

At level 6 grab Extra Stance or whatever it's called so you can get Thicket of Blades.