Don't worry man, flow is one of the hardest things to be good at in rap.

Honestly, it's all about ear and how you put accents on your words. One easy way is to say the word that is gonna be rhymed a little louder and more emotion. Most people listen for the pause in a beat, and right before the pause they say the word that will be rhymed. Best thing is to just practice freestyling and record it and let people hear your flow and tell you how it sounds. Develop your own style, cuz flow is one thing that needs to be switched for beats, and if you do it the same, your music tires out and eventually becomes boring.

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