Now you have the harmonic foundation of your composition as well as a variety of related melodic material ready to work with.
Play the parts on your instrument and see how you can piece them together. Remember to continue recording your progress so that you don't forget any of your work. You never know what may end up being useful.
You may even want to play around with modulating or creating a completely contrasting second section. Use your newly developed skills to achieve all of your compositional goals.