伎俩 is always negative — it refers to underhanded or deceptive tactics. Never use it for positive skills or abilities. For neutral 'technique,' use 技巧 (jìqiǎo).
mistakes
Don't confuse 伎俩 (jìliǎng, trick/scheme) with 技能 (jìnéng, skill) or 技巧 (jìqiǎo, technique). Despite similar pronunciation, 伎俩 is exclusively negative.
