Car Leasing

Simple website - has one form.

my website:
http://testing-staging.premium-invite.com/

A website that I like:
https://invoice-pricing.com/

Im basically looking for a modern, and clean design. I would like to add another section "How it works" and have a few icons depicting user submitting form, and some staff icon receiving it and processing it.

I purely need design for Web and mobile

I respond quick.