Decorating Glass (Oil Bottle/Dispenser)?

I am not quite sure you will be able to get flat mosaic tiles to firmly set on a curved surface. But perhaps there will be glue enough to strongly hold the tile in the area of contact on the convex surface and then, like you say, grout the seams. I suppose as long as the grout material goes under the space in the tiles which don't have contact with the convex surface, it would seal and protect the tiles. But, it seams the grout would have to be clear or you would see the delineation when the grout seeps under the tile in the area where the tile does not contact the convex area. This probably would have to be the case with the uppermost course of tiles to keep the object waterproof.

For the glue, I think you could be quite successful if you used jewelry glue. Jewelry glue is made to adhere glass to flat, smooth surfaces. I have used Dazzle-Tac Jewelry Glue (purchased at Jo Ann Fabrics-glue aisle). This product is great. It grabs fast and dries clear. It is thick, but if you want to thin the product, you can use toluene as stated on the directions.

Instead of using glue and water to adhere tissue paper for future projects, try Mod Podge Glue, a decoupage medium specifically used for papers to adhere to glass. There are matt and high gloss finishes and I am almost positive it is waterproof when dried. You can get Mod Podge Glue at any craft store.

Also, have you ever thought of using glass etching cream to create designs on glass?? It can be quite effective when combined with other mediums as well. Such as glass gems and beads disbursed throughout the pattern.

I am surprised that glass painting has not been successful. Have you set the paint in the oven? Try glass paints that need to be cured in the oven. A friend of mine gave me hand painted wine glasses and I have had them for years without the paint coming off. Yes, they are only hand washable.

As for grout, I am at a loss as what to suggest other than the two part self leveling epoxy. So the epoxy does not seep beyond the last course, you would have to create a dam to contain the epoxy. You might want to try several layers of tape to create a barrier around the middle of the bottle so the uppermost grout/epoxy can actually be stopped from seeping out of the grout lines.

Well, as it would be a see-through house, I would furnish it with amazing, interior lighting that could be changed with the touch of a button to create certain moods and color schemes. I'd get trendy furniture, beautiful artwork on the walls, and because it's a see-through house, it would need a few drop-dead gorgeous occupants.