Website design

I want to create 2 websites that look like this page https://massive.capital/webinar/ and this page https://massive.capital/webinar-thank-you/ but I need help creating the background and static graphics. We can make the buttons but want it to look clean, maybe creating something in Canva using the website feature may help. Here's our info and how it looks now https://risecapitalinvestments.co/webinar