Build the habit of looking before you receive. Scan over both shoulders as the ball travels, take a first touch that opens you toward the free option, and play the right pass without needing to look again.
A server plays into a middle player with two targets beyond him, one marked and one free. The middle player must check both shoulders while the ball is travelling and then play to the free target first time or in two touches. Change which target is marked every rep so he cannot guess. Cue it out loud, check your shoulders, until it becomes automatic, and add a colour or number call to prove he really looked.
Look up is the least actionable instruction in football. It names a problem without describing a behaviour, which is why coaches shout it every week and nothing changes. Scanning is a specific, countable habit: two quick glances over alternate shoulders while the ball is travelling towards you, and it is trainable precisely because it can be counted.
So count them. Watch one player for two minutes and count the looks before each reception. The number is usually far lower than anyone expects, and showing a player that number does more than a season of being told to be aware. Then set a target and count again.
The timing is the part that gets taught wrong. The scan happens while the ball is in flight, not as it arrives and not after the first touch. Information gathered before the ball comes lets a player decide in advance; information gathered afterwards arrives too late to be useful and usually means a touch has already been taken blind.
Two quick looks beat one long stare. A player who turns and studies the pitch loses sight of the ball and mistimes the reception, and he also telegraphs to a defender exactly what he has seen. Short glances, over each shoulder, then eyes back to the ball.
The first touch is where scanning either pays off or does not. Having seen the free option, the touch should open the body towards it. A player who scans well and then takes a touch back under himself has done the hard part and thrown the benefit away.
Save it to your private drills, then change the animation, adjust positions, swap equipment, or drop it into a session block. Or start from a blank pitch and build your own.