One thing you might want to keep in mind is the JPEG compression works best on large areas of a single color. When you add texture to your layout, you break up the area, often in one pixel sections. When you do that it is difficult to compress down to anything visually appealing.
A case in point is a LO that I just posted here:
http://www.scrapbook-bytes.com/galle...cat=500&page=1
Unfortunately, all the "papers" are textured, the background has (had) an embossed pattern, the frame a texture, the velum a texture, etc. To get the whole thing compressed down enough to upload, the textures pretty well trashed out. <sigh>

Oh well, it looks good printed.
Tandika*