landing page Power Bi publishing

Hi all,

Hope this is the correct board for my help.

I'm trying to create a landing page for introduction in PBI Publshing from New - Dashboard- in My Workspace.

  Have have researched , as the background theme seems very basic and limited but can't find an answser .

I have tried to upload from my c drive my design which I have created in  power point  which includes images via  background image , but can't upload it , have tried embeded . Is there away this can be done ?

Thanks in advance for any response