Complex sentence: Males tend to have larger, longer, and wider noses than females, and the tip of the female nose will often visibly point slightly upwards when compared to a male, so the procedure involves removing bone, cartilage and remodelling what remains.
Split into simpler sentences: Males tend to have larger, longer, and wider noses than females; also, the tip of the female nose will more often visibly point slightly upwards than that of a male. Hence, the procedure involves removing bone, cartilage and remodelling what remains.