Since your pup doesn’t have a lot of pink in it, soft must mean soft “washed out” colors instead of the fluff pup right?
Your second hint on the list says something along the lines of your dog liking to show off despite there being cooler dogs in the litter. That must mean that your pup doesn’t have many edits based on the “it isn’t editless” answer.
As other users have stated, “Quiet” could mean that your pup is asleep or has closed eyes. Or maybe it gets scared easy and doesn’t like loud noise.
As for the last hint, I don’t know you very well, so I’m gonna be a bit useless for that one...
From what I’ve gathered, could it be one of these?

• Soft colors and lines
•Not an overwhelming amount of pink
•The eye color is part of the pallet
• Not heavily edited
•At least 4/5 colors from pallet

•More soft colors and lines
•Pink isn’t the main color
•Eye color is either a really light blue or white whcih was mentioned as a possibility
•No edits, but that could change when it grows
•Uses 4 colors with that sneaky tail tip

•The pupper’s back looks pretty soft to touch
•Not too much pink
•Black/Charcoal eyes
•Pup seems annoyed and has its ears pulled back. Maybe it just wants spme peace and quiet *wink*
•Smol ear edits
•Has 4 colors
EDIT: Your signature says something about being an introvert. Introverts hate crouded soaces and loud noise. Poptart doggo is looking super promising...