Hey there! I won't have much to say, but I'll say a little bit about the sound of my entry, Flight Of The Electrodud (https://thatjdude.itch.io/flight-of-the-electrodud), because I got some positive reviews for the sound and music. And for the record, I'm not specialised in sound design.
I made every sound effect and the music just using Bosca Ceoil and Audacity. I created the "build up to thud" sound effect with just a long reverse symbol sped up a bit, and I created the thud sound effect by just combining a bunch of bass noises with a low melodic tom and bass boosting it a little bit.
As for the music, I just wanted to create a short, simple, and hopefully catchy tune that reflected the game's tension of "one split second of waning focus and I'm probably gone" while still being fun. (I was going to make it just last the full minute, but I know my limits, and that would've taken too much time for it to still sound good.) The menu jingle was simply meant to be appropriate as both a "welcome" and "goodbye" jingle, since it's where players are most likely to, well, stop playing, as everything loops back to the menu. And the victory jingle is just... triumphant, I guess. Oh, and every bit of music/jingle was slightly bass boosted.
But I think one of the main things that helped tie it together was that everything, sound effects and music, were in the same key - G minor. made thudding to the ground in time with the music that much more satisfying.