Once fully cooled, you can separate the shapes by breaking the nougatine gently where you have scored it.
Remarks
You can use walnuts, hazelnuts or pistachios instead of almonds, or whatever mixture you prefer.
Give yourself a longer working time by putting the baking sheet you will use for rolling in the oven at the same time as the almonds. It will then be hot and the nougatine will stay workable for longer.