When describing a well-drawn piece of art or illustration, there are many other words you can use to convey the same meaning. Some synonyms to consider for the term well-drawn include accurately depicted, expertly illustrated, skillfully composed, finely crafted, finely rendered, exquisitely detailed, beautifully executed, skillful, and masterful. Each of these words captures a slightly different nuance of the original term, but all convey the idea that the artwork in question has been created with great care and attention to detail. Whatever word you choose to use, it should leave no doubt in the reader's mind that the artist in question is a master of their craft.