When you put a child in a safety seat the shoulder harness should always be over the shoulder and all the straps should be snug against the body.?

Yes, when securing a child in a safety seat, the shoulder harness should always be positioned over the shoulder, ensuring it is not twisted and lies flat against the child's body. Additionally, all straps should be snug to provide maximum protection during a ride. This helps to keep the child securely in place and reduces the risk of injury in the event of a collision. Regularly check the harness fit as the child grows to ensure continued safety.