@QuasiQuadrant I use a basic soap batch of OO, CO, PO, and Castor Oil. Blend and stir until emulsion. Add FO, separate into containers and stir in colorants. Then it becomes either a waiting game or a quick OMG I have to pipe right now, depending on the FO. Usually I keep stirring the batter until I can plop it from my spatula and it holds a peak. I try not to put too much soap in my bags as it can warm up with handling and gets liquidized again. Air bubbles in the bag can mess up the piping so you have to be careful with that. Soap is not as forgiving as icing. I plan on purchasing reusable bags once I use all the single use ones that I have. I like using the larger stainless steel cupcake piping tips. Petal tips are great for roses, small petal flowers, and peonies. Leaf tips for leaves. I recently purchased a tip for making chrysanthemums. It is time consuming, but the results are cool.
The roses in the picture were piped too soon and flattened out. I didn't have a proper piping nail at that time either so they were tricky to do. I cut freezer paper or parchment paper to fit on the piping nail and use a touch of soap to hold it on. You have to be careful removing the flower as it can get messed up.