• Skill of conversing
  • Proper order
  • Role of anxiety

When you are fluent in a language, you're able to converse rapidly, easily and fluidly. This is not difficult to achieve once you are skilled at understanding native speakers in all situations and you are skilled at speaking the language. And, of course, you will become more skilled at conversing the more you 'practice' it.

You can also practice conversing with native Spanish speakers before you're skilled at understanding and speaking. And such practice is always good. But you can't expect to converse 'rapidly, easily and fluidly' yet simply because you may not understand something the other person just said, or because you want to express a thought in Spanish, but you can't find the vocabulary to do so. 

In other words, practice conversing with others whenever you can, but give top priority to reaching a high level of skill at understanding native speakers.