You do not have to begin with a floor push-up to practise a pushing movement. A wall version lets you learn the action while standing, using a stable surface and a position you can control. Choose the version that fits your current strength rather than treating a difficult repetition as the only one that counts.
The first aim is a repeatable movement: a comfortable starting position, a deliberate bend of the arms, and a controlled return. If you are unsure about technique or have an injury or medical concern, ask an appropriate professional to help you choose the exercise.
Use a wall that is actually suitable
Choose a clear, solid wall and a floor where your feet will not slide. Keep pictures, shelves, loose furniture, and other obstacles out of the movement area. A door that might open or a decorative panel that cannot support pressure is not an equivalent substitute.
Give yourself space to move without stepping around a bag or pet. You should be able to concentrate on the exercise rather than watch for someone coming through a doorway. Ordinary preparation makes the practice simpler; it does not require a dedicated gym room.
Learn the basic standing movement
The NHS wall press-up instructions begin at about arm's length from the wall, with hands at chest level and fingers upward. Keep the back straight, bend the arms slowly with elbows near the sides, and return slowly to the starting position. Use the accompanying demonstration to understand the movement, rather than guessing from a single photograph.
Start with an amount you can perform deliberately. The NHS page gives an example set-and-repetition arrangement, but you do not need to force that amount on your first attempt. Individual guidance is useful if you cannot comfortably reproduce the position or movement.
Pay attention to what changes during the repetition
Notice whether you move toward and away from the wall as one controlled action or begin bending at the hips to reach it. Watch for a rushed return or shoulders rising toward the ears. These observations can help you describe the exercise to a trainer; they are not a way to diagnose an injury yourself.
Keep breathing rather than holding your breath to finish. Mayo Clinic's strength-training advice emphasizes correct technique and reducing the resistance or repetitions when form cannot be maintained. Stopping a set before it becomes hurried can be more useful than adding repetitions that no longer resemble the movement you intended.
A harder surface height is an option, not a deadline
Online progressions often move from a wall to an elevated surface and eventually the floor. That is not a calendar you must follow. Stay with a version that provides useful practice, and seek instruction before moving to an arrangement you do not understand.
If using an elevated surface later, it must be stable, suitable for bearing the load, and unable to slide or tip. Do not use an unsecured chair simply because it is at a convenient height. A trainer can help select the setup and show how the movement differs from the wall version.
Fit practice into a balanced session
A push-up is one movement, not a complete strength plan. Consider how it sits alongside the rest of your exercises rather than repeating it whenever you pass the wall. General adult guidance includes strengthening the major muscle groups on at least two days a week; your individual program should organize the exercises and recovery appropriately.
If you already have a suitable routine, ask where this movement belongs in it. If you are starting from scratch, a qualified instructor can help build a simple session instead of having you collect unrelated exercises from short videos.
Record the version, not a label about yourself
A useful note might say which wall position you used and whether the repetitions stayed controlled. That gives you something concrete to repeat or discuss. Calling yourself bad at push-ups does not explain whether the surface, exercise choice, or amount of work needs changing.
Stop if the exercise causes pain and seek suitable advice for persistent symptoms. Otherwise, make the next practice about one clear aim: repeat the version you understand with consistent technique. Starting with a wall is a way to practise strength, not a failed attempt at someone else's workout.