There are so many embellishments that it would take way too much time and space to list them all, so I am hoping a few samples will give you the idea, as well as ideas of how to choose and use different types. I am using the same picture to point out different things you might use. I may offer more suggestions in the future on “tips and tricks”.
There are tiny rosebuds, beads, satin ribbon rosettes,piping, and braids– from the larger daisy braid to the tiny looped rayon braids (some shown in this picture). Rick-rack, a specific and familiar form of braid, is a favorite embellishment for old dolls. Rick rack has actually been used since the 1800s ( on people clothes) although the type of use has changed somewhat. In early years it was used to “finish” fabric edges so they would not fray, in place of hemming the edges, and having the double purpose of also providing a decorative finish. In the 20th century rick rack has mostly been used for embellishment— decorative purposes. The lovely different sizes available now are great on doll dresses. When choosing, the largest you should use on doll dresses is the 1/4″ baby rick rack. anything else becomes too coarse and out of proportion, unless you are making a dress for a life-size doll.
Small or even tiny buttons add a charming touch to many things. There are doll size rhinestones and studs. Bows should always be done in either double-faced satin or taffeta ribbons for the best results. Artificial flowers, formerly of a more paperish material as well as real silk, are now happily available in “silk” flowers of most any size you need. I used some 1950s vintage flowers and some newer “silk” flowers on this bride dress, shown here on a Toni doll. Click on the close up pictures to see the flower detail better.