I was reading through an entry earlier and I noticed I mixed past tense and present tense in writing:
"Terri looked over the clouds as the plane carried her weightlessly. She was so glad to get away from all of her problems, she feared she might extend her holiday. She sipped sweet brandy as she watched a rather monotonous show on the television. Tired, she leans back in her plush seat, eyelids falling as the dull words of the announcer slowly disintegrates into the darkness."
I've never really studied English, I don't know when it's okay to mix the two tenses. In this case, it's clearly present tense in a past tense paragraph, so it must be wrong?