ITCK doesn't really say much other than giving a listing of which spells can be converted and which disciplines they would fall into. It also has a simple conversion table changing components to displays.
Which brings up another question: How are you handling displays?
This is what I was going to do:
Displays:
Psychokinetic Powers: A low humming sound.
Clairsentient Powers: Eyes glow green
Telepathic Powers: Everyone senses that they are being watched
Psychoportation Powers: Sound of glass breaking
Psychometabolism Powers: A wet cracking sound as the body disfigures or heals.
Metecreation Powers: Ectoplasm soaks or blankets the created object or effected area for a brief second.
This ok?
Also, here is Shield converted:
Shield
Psychokinesis (Con)
Level: Psion 1
Display: Vi, Au
Manifestation Time: 1 action
Range: Personal
Target: You
Duration: 1 min/ level
Power Points: 1
Shield creates an invisible, mobile disk of psychokinetic force that hovers in front of you. It negates magic missile attacks directed at you. The disk also intercepts attacks, providing a +7 cover bonus to AC. Despite this bonus a shield spell does provide actual cover and does not negate attacks of opportunity against you. The disk protects you only against magic missiles and attacks from one direction. You designate half the battlefield (with yourself on the dividing line) as being blocked by the shield. The other half is not. You can change the defensive direction of the shield (that is, rotate the dividing line) once as a free action on each of your turns.
Same as the spell really.