My Mother made beautiful scones and I am always trying to replicate them. My tips for best scones are not to handle the mixture anymore than is necessary, using the coolest part of your hands (your fingertips) to rub the butter in. And always use a corkscrew motion when cutting scones with a ring cutter. Perhaps my best tip when it comes to scone baking is to ensure you have a hot oven - a hot oven shocks the dough into action - and I always bake on the middle shelf to avoid burnt bottoms! -MB
Now all you need to do is pop the kettle on and get baking!