Showing psychic ability is rather easier than you think. Look at this list of ways to show using your psychic powers and then read the examples at the bottom.
Ways to show:
Meditating
Imagination running away from your character
Feeling a presence when your alone.
Feeling happy one minute, then suddenly feeling sad, angry, exhausted and confused.
Predict an event right before it happens.
Gut Feelings
Vivid Dreams
Sense of trouble coming
Hearing and seeing things not there.
Examples:
My gut kept telling me that something was wrong. (Intuition)
As I got closer to her, my body became overwhelmed with pain. (empathy)
Straining my eyes into the darkness, my ears grabbed murmuring voices, with my heart thumping uncontrollably, a feeling of shocking peril and passion filled me. (Intuition)
The soft voices began to visit my head again, but this time the only words I could comprehend was, “trust him”. (clairvoyance)