tweaking

"to tweak the nose."

"If we tweak the colors towards blue, it will look more natural."

"My brother was tweaking me about my new haircut, saying it looked like a bird's nest. "

"He hadn't slept in days and was constantly fidgeting and talking rapidly; everyone suspected he was tweaking. "

"The student started tweaking when the teacher asked if he had cheated on the test, avoiding eye contact and fidgeting nervously. "

"The recipe was already delicious, but a few minor tweaks—like adding a pinch of salt and a squeeze of lemon—made it exceptional. "