Simple. I normally buy ready made shortcrust. Use bowl or plate to cut round to make a circle. Then dice swede, onion and potato, small pieces, small fingernail roughly. Then cut some skirt steak (cheap and what is normally used but could use rump) into similar size. season the veg well with salt & pepper, and put a small amount on the pastry, then meat, then veg and more meat. Go round the outer of the pastry with water/beaten egg, then fold over. Pinch down and crimp. I normally add a small steam hole on top, glaze with beaten egg then bake.