Having a crack in a cheesecake is very common so I will show you an easy way to fix it. The only tools you need are hot water and a butter knife.
For deep cracks, start pressing far away from the crack to get it to close completely.
After closing the crack completely, put the butter knife in the hot water and smooth the surface of the cheesecake to make it even.
Smooth the sides of the cheesecake also using the same method.
Heat your choice of jam for a few minutes until it becomes liquid (You can also decorate with chocolate using the same way).
To decorate it easily, place a bowl upside down.
Cover the bowl with a kitchen towel then place the cheesecake on top of it to catch any excess jam.
Using a small spoon, start pouring some of the jam on the edges allowing it to drip down every 1/2 an inch.
Pour the rest of the jam on top of the cheesecake and spread evenly to cover the top.
Now decorate with the berries or fruit of your choice.