How do I display a larger image on the page and on the area listing?

[Alfa1]

I have an area 'People'. I have added a photo of the person as the page icon for each page.
I used a link to a XFMG Entry.
This displays as a very small icon on the area and in the page header. (next to title)
How do I display a larger image on the page and on the area listing?

[pegasus]

You can tweak icon sizes globally using Style Properties, under the group Wiki: Icons > Dimensions.

The icon next to the title uses the Extra-large size.
If you're not tiling the area list, the area list uses the Normal size.

If you ARE tiling the area list (probably recommended if you are only doing this in one area), then the size is controlled by the Style Properties under the group Wiki: Tiles.