Really examine every time you use “look,” “watch,” “see,” “feel,” etc., and any other words that “filter” (via John Gardner) the prose through a perspective that is already well established. If we are in Jose’s close-third perspective, for example, we don’t need to know that Jose looked at the clock in order to know that he read the time. “The clock read 7:00” does the job of implying that Jose looked at the clock. This is an innocent example, but sometimes the “filter” can obscure the object. Significant looks are cultural—I suspect they come from watching screens. On screen a significant look is something we can see the specific details of. In prose, “She glared at his mouth” cannot be used to take the place of “She wanted to rip his mouth” or especially “His mouth puckered stupidly.”