With Simtiful, it is easy to adapt your design to WordPress theme.
Upload your own logo on Customize option.
(Appearance > Customize > Site Identity > Upload Logo)
Changing main banner image
Replace main-banner.jpg in img folder.
Changing text on main banner
Open index.php and change text on line 16 – 18.
You can add your own CSS file to add/overwrite the style by using child theme. It also allow you to use your custom layout on Simtiful. Please visit here for more info.
Copyright text in the footer
Use Customize option.
(Appearance > Customize > Footer Copyright > Copyright text)