* The sky looks stormy. (The linking verb "looks" connects the subject "sky" to the predicate adjective "stormy".)
* She looks tired after her long day. (The linking verb "looks" connects the subject "she" to the predicate adjective "tired".)
* The painting looks beautiful in this light. (The linking verb "looks" connects the subject "painting" to the predicate adjective "beautiful".)
Remember: Linking verbs don't show action. Instead, they connect the subject to a word that describes or renames the subject.