Since you’ve got the micro

Since you’ve got the microphone part figured out, take care to control your environment. If you can record your v/o in a quiet, echo-free room, you’ll get more professional results. In a pinch, buy some moving blankets or get some cheap sleeping bags. Surround yourself on all sides with these blankets, cover the floor if you can. This will give you the most flexibility in post to enhance the audio vs. fighting ambient noise or transient noises.