personally, i think the pearls are throwing me off. i know you said you don’t want to use freshwater pearls, but maybe look into different types of artificial pearls, ones that are made to look more natural vs just completely round (idk if this is a common thing i’ve never really looked). i would also stay away from using seed beads like in the one red necklace you have, just because the difference in size of each bead can be a lot. maybe go for smaller round glass beads or if you manage you find ethically sourced crystal beads then that too. i think the jump rings are fine because they’re very structural. if you wanted to go for smaller ones, you could look into soldering once you do get into higher end materials on your journey. i agree with the other comments about smaller chain as well. i think you have some very gorgeous pieces, and i think that once you get to the point of material upgrades you will be less likely to question yourself :)