I am about to carve a lithograph and was wondering what side most people carve if they are using the Candlestone product. One side is smooth and the other is slightly textured. I usually carve the smooth side but was thinking that if I carve the textured side with the smooth side facing the light, would more light be projected through the carved area rather than the untouched area. Is this a case of *half full or half empty*? Thoughts? Thank you.