Design issue - increasing angle of the surface

[Anonymous]

Hi, can someone help me to mimic a design? i have attached the issue. The first picture is my design, the next is the design i'm trying to mimic. How to make the the surface angle increase?

[davebYYPCU]

Quickest for me, is 3 sketches, to make sizes adjustable, but two would work as well.

Draw the front and back profile and Loft them.

Might help....