I require an icon to represent a book with an unknown/missing cover. My app lists books that the user is reading or has read. Most of these books will have some cover art, but sometimes the cover art will be missing.
If the cover art is missing I want to show a generic "book cover" icon instead.
The icon has to show a generic book cover:
* in portrait orientation
* flat, not rotated in 3D
* it can be in colour but it should not be too bright/dynamic, it should not draw attention away from the real book covers
* should be smart, stylish, with some texture/detail
* should be on a transparent background
* will consider square icons, although portrait orientation is preferred
The following sizes will eventually be required:
336 x 336 pixels
168 x 168 pixels
152 x 152 pixels
76 x 76 pixels
If the book cover is in portrait orientation then these sizes should represent the vertical size.
For context, I have attached a screenshot showing a missing book cover, with a placeholder grey icon. This grey icon is what I want to replace.