I think I can help here with the eyes. What he’s talking about is increase the details you absorb during the day through your optic nerve. So when you notice an object, notice all the contours, the rough edges, the color, the different hues, all at once. Take in more light through your eyes, all day long. I used to do this anyways, and now my dreams are about a 7/10 in clearness normally. Sometimes, I’ll have those dreams with high lucidity, and it will be exactly like IRL. The Increase vividness will help, also, say before you go to sleep “I recall all my dreams with perfect clarity and vividness”. Say this slowly when you are very relaxed, and put emotional emphasis on every word, but try to make it joyous, and exaltant. Hope this helps. Namaste