You did a good job drawing that picture of a dinosaur.
You're good at drawing, aren't you?
この場合、次のような言い方ができますよ。
ーThat's a nice drawing.
「それは上手な絵だね」=「上手に描けたね」
ーYou did a good job drawing that picture of a dinosaur.
「恐竜の絵を上手に描いたね」
ーYou're good at drawing, aren't you?
「あなたは絵を描くの上手だよね」
ご参考まで!