That's a half-litre bottle of beer, for scale. Click for a larger one (larger photo, I mean, not larger pie/beer).
When I make the next one, I'll cut the ham and apples into smaller bits, and I'll distribute small bits of cheese throughout the filling to help it all hold together when it's cut. I think I'll also make it wider and not so tall. And I'll remember to glaze the pastry before it goes into the oven.