Now try reversing the process. This extract uses present tense narration, so rewrite it using past tense narration.
Panting, I fight my way out of the sleeping bag. The torch slips from my fingers and blinks out. Whimpering, I fall to my knees and grope for it. I can't find it. Can't see my hands in front of my face.
Again, compare the two versions. Does the change of tense have an effect?