Possible Clues:

• Gifted (anag.)
• Having lost my head I would become not 5 down
• Right out of the cooler, thief's beginning to show unease
• Dog dropped tail to receive fuss
• Have ants in one's pants
• Make small restless movements
• I should get on fine, but appear nervous
• One cannot sit still and do this
• Act nervously
• Fret over some scattered light, eg, diffraction