I found a picture that I liked soo much that I was looking for the instructions how to make it. And there I found some more pictures. They look different, but the making is basically the same. I am thinking that you can use rub-ons and clear coat them, or use patterned ornaments to begin with.
This is the picture I found first without instructions

And here is the ones I found after that.
I just used clear glass ornaments and sculpty 11. I first roll a small circle and flatten in out thin, and mold it to the bottom. I then make a smaller circle disk and make it a little thicker, and press the ball down on it. I used a paring knife at a slant and made it look ruffled. Then I add the handle just rolling out a snake of clay. I kinda make one end pointy, and press it on the bottom clay ruffle and bring in up to the top. Everyone is a little different, but I cut the clay to the length that I like. I do the same for the spout, making a little hole in the end. each spout ends up looking a little different, just make sure that the spout clay is pressed firmly to the ball except where it curves. I then make a thin snake and roll it flat. use the knife to cut on both long sides so the ruffle will be even. I take this thin strip, starting at the handle, and wrapping around the top of the ball, cutting off any extra length. I then use the knife again to ruffle the top. Next I bake, and paint. I used rub ons for the designs. sprayed with a high gloss finish. hope this makes sense to you. I just sat down one night and played with the clay. I got the idea from another crafter on this board, unfortunately, yahoo deactivated my old email addy, and lost all names and folders. Wish I could give her credit due. Mine are a little different than hers. Next year exchange will be my teapots. started too late to use them this year. I only costs about a dollar fifty to make these.
forgot that the biggest trick to these is to make sure that the handle and spout are lined up together if you are looking from the back forward. these are really quite easy, and you can alway take the clay off and start over. also, the second disc on the bottom is so the teapot stands up. you only ruffle the larger one on the bottom
And here some other instructions doing the same thing.
Materials
Glass ball ornaments, colors of choice, 2 3/4" diameter
oven bake polymer clay assorted colors
Assorted acrylic paints
gold metallic embroidery floss
Parchment paper
Clear adhesive gel (E6000 glue)
Instructions
1. Form clay pieces (note: all teapots are made in the same way, only embellishments differ) Roll clay to form 1/4" diameter log. Use knife to cut lengths from log as follows: 4 3/4" for base, 4"for top, 3 1/2 for handle and 2"for spout.
For top and base, join clay ends to form circles. For handle, pinch both ends to flatten; bend clay to resemble a handle. For spout, pinch one end of clay and bend to resemble spout.
For roses, roll a 1/16" diameter log and wrap clay to desired width. For leaves, form a 1/2" long oval from clay and pinch one end to a point; use toothpick to add veins as desired.
Place all clay pieces on a parchment-lined cookie sheet.
Following manufacturer's instructions, bake clay pieces; let cool completey.
2. Assemble the teapots. Use adhesive to attach clay pieces to ball.
Use end of paintbrush or toothpick to dot paint on balls as desired.
For hanger, cut 7" length from embroidery floss. String length through loop; knot ends.