Problem adding details to the top part of a model using boolean I am trying to make this lantern here but I can't figure out how to make the details in the top part (Circled in red).



And this is the 3D view:



I have also tried using the boolean modifier but this strange artifacts on the edges of the boolean area appears:

 

So, is there any other way to make this without using boolean or am I doing the boolean operation wrongly?
I think you can do it this way but I used a higher topology: