Use the conditioner more on the lengths of the hair and try to keep it away from the scalp. If the roots are free of conditioner, the hair will be fluffier. To style fine hair, first blow-dry the hair trying to get more volume at the roots. Use a light styling lotion to create volume without weighing the hair down. For a fancier, fuller look, use Velcro rollers on pre-dried hair and a light hair spray and apply heat.
Hot rollers are excellent also.
Aerosol hair sprays work best on fine hair because they don't weigh the hair down. A good haircut to remove split ends is highly recommended. Ask your stylist to recommend a haircut that will compliment your fine hair and suit your features. Very long hair is usually not recommended for fine, thin hair. If you must wear it long, keep the ends blunt and use a protein treatment once a week.