Everyone achieves the sound they desire slightly differently, but I guess I'll tell you what works for me, though it might not work for you.1. Listen, listen, listen, listen, listen! I particularly LOVE Rubenstein's rendition (the one on the record, though the one he did on that one TV show is pretty nice too). Compare the different renditions, pick out what you like, what you don't like, compare it to the score2. Listen SUPER CAREFULLY to your own playing. More often than not, that's all of you really need to actually. Once you hear it you'll be like "oh this is terrible, I need to fix it," (queue the self-esteem issues, at least I have them lol) and usually you'll find a way. The trick is to listen to yourself, and as simple as it is, it's harder than you might think. Try playing the easier sections with your eyes closed. REALLY listen.3. I can't explain singing tone over the internet, you might want to seek a teacher for that. Idk I'm not that great with words haha. You might understand what I mean by listening to some other pianists though. It's a big mix of articulation, phrasing, tone, and so many other things that I don't fully understand myself. In fact, I barely understand it and could use a lot of work on that myself, so I'm not the best person to ask...4. In terms of which notes are loud and which notes are soft, since I play with more "weighty" technique, I kind of just imagine more of my weight in whatever fingers need to be louder, and less weight in whatever fingers are more quiet. I found it by trial and error. Let me know how that goes for you.5. There are a ton of books you should read! The Art of Piano Playing by Neuhaus is one of my personal favorites.Good luck!