So! You’ve tinned them wires like a champion, and now you have to attach them to a pot. This is my preferred method because it establishes a good solid physical connection before you solder. Firstly bend the pot legs round so they form little hooks like this.
Next bend the ends of your freshly tinned wires into little loops.
You’ll have a problem with this if your tinned ends are globby. Hoop them loops on the hooks, put the pot in the third arm and solder away!