Thread:Doctor Ibrahim/@comment-27550231-20160810043758/@comment-28358106-20160814202227

You should never have to lock any layers, except on the nase image. The reason it's better to keep things seperate in layers is because it allows you to manipulate one layer at a time. You can apply effects to a single layer and not have it affect other layers, and copy layer effects. If you lock a layer, it just freezes that layer in a history state.