For the ultimate in options for assigning an image to a body, be it a sheet body, a solid body or just one face of a body, use the tools found on the Visualize Shape toolbar. Now this can be done in two ways which each has their uses. One is use a 'Decal', which from the name you can sort of figure out that this allows you to 'paste' an image file, which can actually be define so as to follow a cut-out shape if desired. Once defined you can size, orient, move around, etc.
The other approach is similar to the result you got creating a 'Raster Image' except that you have more control and more flexibility but it also requires more prep and set-up and of course the dialogs and workflow is more complex, but it does allow you to use more than just .tif images including .jpg and .png files. What you here is first define a texture where you define what its appearance will be including whether you wish to use an image or one of the programed 'materials' like wood or stone or metal, etc. Once defined (or selected from the list of predefined materials/textures) you then assign it to a body or face and depending on which, you will have certain options as to how it will appear.
To access these options activate the 'Visualize Shape' toolbar. Existing Materials are selected from the 'Materials' tab on the Resource Bar and once 'Copied' they can be 'Pasted' on to the 'Materials in Part' tab where they can be edited or new ones created including the ones using image files.
Anyway, that should get you started.
John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Cypress, CA
To an Engineer, the glass is twice as big as it needs to be.