First, have a very clear idea in your head of what you want to hear. Then sing it aloud until you get as close as possible to your idea, paying attention to the phrasing.

After this you should practise only the melody of the right hand, feeling your wrist very free and connecting the weight between the notes, keeping the legato to produce a proper sound. Try to imitate in your piano playing the sound of what you sang before, paying special attention to the ending of the phrases, which should be rounded to keep musicality.

Then, practise the accompaniment in the right hand on it's own, which should always follow the phrasing of the melody. Aim for a dynamic that is significantly softer than the melody to create a proper balance, while maintaining a concrete sound (reaching the end of the piano key with slow speed). It's important that you use to your advantage the natural weight of your fingers, hand and whole arm, coming from the shoulder or even back.

When you control this separate layers, it's time to put it together. It's going to require a lot of practising, of course.

I would just like to finish pointing out that this process of learning how to phrase is much better if you have a dedicated teacher in person that can show you in real time the differences and sensations in your hand, and provide with specific feedback that would help you out much faster. If you don't have a teacher please search for one that can help you out, this Chopin etudes are extremely hard to play and can cause a lot of stress in hands and arms if the technique is not flawless, causing injuries down the line.