The secrets for a nicely shaped, well risen scone:
Handle the dough as little as possible - you shouldn't really be kneading it, other than to just bring it together.
Cut with a sharp metal cutter, or a sharp, flat-bladed knife that's been dusted with flour, and don't twist when you cut - just straight down and lift straight back up.
Glaze/wash on the very top only - don't pa