Where is the lever to open bonnet on citreon picasso?

There is a small switch inside the footwell, near the driver's door - push this upwards, but keep your foot resting on the brake. With one foot on the break and one pushing the bonnet release upwards (you may need another driver's assistance with this) gently lift the bonnet lever until you see it lift and come free, this releases the bonnet catch/lock mechanism. To open, just lift.