Just FYI, the feats of a level 5 Warforged Shaper I'm playing
F1 Up The Walls [Flaw: Murky-Eyed]
F2 Psicrystal Affinity: Nimble [Flaw: Noncombatant]
1 Boost Construct
1 Adamantine Body (ECS)
3 Keen Intellect (Oriental Adventures update) [replaces Wis by Int for Will, Spot, Sense Motive, Heal and Survival]
5 Personal Construct ACF
I'm not especially recommending you do the same - I have quirky tastes.
(Up the Walls is purely for fun, Keen Intellect is to make him more versatile.)
And powers:
1 Astral Construct, Detect Psionics, Grease, Minor Creation, Vigor
2 Ego Whip, Energy Stun, Repair Damage, Share Pain
3 Energy Wall, Time Hop
We just had a fight where I Time-Hopped a horse from under a Martial Adept with a weird (homebrew) school whose maneuvers enhance fighting from horseback. Then Grease swept the feet from under that warrior... now the DM hates my guts.