Well‑bred / considerate (of a person) or well‑made / well‑crafted (of a thing); denotes good character, thoughtfulness, or balanced construction.
彼はよくできた人で、困っている人をよく助ける。
He is a considerate person and often helps people in trouble.
よくできた作品だと審査員に褒められた。
The judges praised it as a well‑crafted work.
親はよくできた子だと口にする。
Parents say, 'He/She is such a good child.'