3 sentences

1. 他总是在挑剔别人的毛病。

   tā zǒng​shì zài tiāo​ti bié​ren de máo​bìng.

   He is always finding fault with others.

   Source: Tatoeba

2. 别太挑剔了，这样就差不多了。

   bié tài tiāo​ti le, zhè​yàng jiù chà​bu​duō le.

   Don't be too picky; this is good enough.

   Source: Dong Chinese Dictionary

3. 他的口味很挑剔，很难请他吃饭。

   tā de kǒu​wèi hěn tiāo​ti, hěn nán qǐng tā chī​fàn.

   He is a very picky eater; it's hard to invite him for a meal.

   Source: Dong Chinese Dictionary