I'd go for something flatter, the bottom is quite hard to get right.
Also try warming the surface with a hair drier and also the vinyl, And dont forget to make sure the weave all goes the same way ;)
 
Mmmm.. Just had a look, see what you mean where it narrows does look tricky. Trying to think what else to do first. Glovebox handle and the gear stick gatter surround. What do you think?