For instructions on how to customize PDF cover sheets, read PDFCreator/Custom cover sheets.
Cover style
This style centers the logo, book-title and book-subtitle vertically. Images are shown in their full height.

Go to the page MediaWiki:PDFCreator and select your template. Then add the below content to the appropriate tabs.
Cover sheet layout
Replace the content of the tab Document preface with the following content:
<div class="pdfcreator-intro">
<div class="pdfcreator-intro-logo">{{{logo}}}</div>
<div class="pdfcreator-intro-title">{{{book-title}}}
<div class="pdfcreator-intro-subtitle">{{{book-subtitle}}}</div>
<!--<div class="pdfcreator-intro-text">
<div>Adress line 1</div>
<div>Adress line 2</div>
<div>City, State</div>
<div>More contact info</div>
</div>-->
</div>
</div>
This layout already has some additional hidden area for additional intro-text, but it is commented out.
CSS rules
In addition, append the following CSS rules to the standard content of the Styles tab:
/*Custom cover sheet styles*/
.pdfcreator-type-intro {
background-color: #3E5389; /*only visible if no cover-image is available */
background-position:center 0;
background-size:100% auto;
max-height:29.7cm;
overflow:hidden;
}
.pdfcreator-intro-logo {
position: absolute;
padding: 0.3cm 1.75cm;
width: 21cm;
top:12.5cm;
max-height: 2.6cm;
overflow: hidden;
background-color: #ffffff;
}
.pdfcreator-intro-title {
top: 14cm;
left: 0cm;
padding:1cm 1.75cm;
width:21cm;
background:#ffffff;
opacity:0.3;
font-size: 32px;
color: #3E5389;
font-weight: 800;
line-height: 1.5em;
}
.pdfcreator-intro-subtitle {
display:block;
font-size: 18px;
color: #3E5389;
font-weight: 600;
line-height: 1.3em;
margin-top:0.5cm;
}
.pdfcreator-intro-text {
padding-top:2cm;
font-size: 14px;
font-weight: 600;
line-height: 1.3em;
width: 17.5cm;
}