@IanzThingz - Bryce tiles directly tileable pictures if you select the the Symmetric Tiling and Scale Picture Size options, then set scale in the Transformation tools to 50%. Teresa’s method doesn’t actually give you a larger picture. Instead of a 400 x 400 picture, you have 4 400 x 400 pixel pictures in an 800 x 800 pixel picture. The result if done in Bryce is the same.
If you want to tile pictures that are not tilable, just use the Repeat Tiling option instead of the Symmetric Tiling one. If the Scale Picture Size option is enabled, the sizes 0% and 100% in the Transformation Tools gives you just one picture on the object. If the size is set to 50%, you get 2 x 2, if it is at 33.333% 3 x 3, at 25% 4 x 4, at 10% 10 x 10, at 1% 100 x 100.
Things get a bit more complicated if Scale Picture Size is not enabled. Or if negative %-sizes are used.