Creating the Summer Berry and Peach Cheesecake can be a fun and achievable endeavor with these clear steps:

1. Preheat your oven to 325°F (160°C).
2. Prepare the crust: In a medium bowl, mix graham cracker crumbs, melted butter, and sugar until combined. Press the mixture firmly into the bottom of a 9-inch springform pan. Bake for 10-12 minutes, then set aside to cool.
3. Make the cheesecake filling: In a large bowl, whip together the softened cream cheese and sugar until creamy and smooth.
4. Add the vanilla extract, sour cream, and lemon zest, mixing until well combined.
5. Incorporate the eggs: Beat in the eggs one at a time, mixing on low speed until just combined. Avoid overmixing.
6. Add the flour: Gently fold in the flour until just combined and smooth.
7. Pour the filling into the cooled crust, spreading evenly.
8. Bake in the preheated oven for 50-60 minutes, or until the edges are set but the center is still slightly jiggly.
9. Turn off the oven and leave the cheesecake inside for an additional hour to prevent cracking.
10. Remove from the oven and let it cool at room temperature for 30 minutes. Then, refrigerate for at least 1-2 hours to allow it to set properly.
11. Prepare the topping: In a small saucepan, heat the apricot preserves over medium heat until melted. Cool slightly.
12. Arrange the peach slices and mixed berries on top of the chilled cheesecake. Brush the melted apricot preserves over the fruit for a glossy finish.
13. Garnish with fresh mint leaves if desired.

By following these steps, you will create a stunning Summer Berry and Peach Cheesecake that is sure to impress your friends and family!