I finally got some Chemcast 1/4 ivory colored acrylic. I have been wanting to do a lithopane for awhile. I am about to make my first "sled" for lithopanes. And my OCD (obsessive compulsive disorder) kicked in high gear. Which orientation is better? I want to do 8 x 10. Which means I can lay it out portrait or landscape! Which is faster? which is better detailed... or is there a difference?