Petra It's usually the first two lines.
My first two lines usually works. Please read on.
Petra Proposals are not rotated. Proposals are in the order of "best match" by default, and the boosted ones on top.
Mod Avery mentioned proposals are rotated although not in the same way as profiles. And how could people with no history be placed as best match if not because of some "rotation"? Even if their description and/or portfolio are a perfect match, I doubt there's nobody with some history/reviews, that are also a perfect match, but they're placed in the Other Folder instead.
So I trust the proposals are rotated without the mod having to confirm about it, and I'm not saying that I'm against it. I see things from their (Upwork) POV as well. Without the rotation, newbs will have no chance.
Petra Chances are the client archived your proposal early in the process.
Why? As I also mentioned in the previous forum, what's left is only my face, because my first two lines (almost) always worked, before the rotation era. They worked even when my profile description was worse than it is now. I used to have only a single sentence in the description. My profile is bad, I got hired by convincing clients with proposals, starting with the snippet (first two lines).
The hired person was someone with rising talent badge. My earnings bigger, and I'm quite certain my first two lines was also better and I'm quite confident client will interview me IF they click-open the proposal, as what usually happened before the "Upwork vision change".
Why else would the client archive my proposal without click-opening it? If it's not for my face, or the snippet (the first two lines etc.) was completely out of their view somehow. To emphasize again, the job was quite specific where it doesn't attract lots of freelancers/bots and client even still took days before hiring.
And again, this doesn't happen to everyone, I know, where my bad/incomplete profile might have a part in why the algo still prefer to put me at the bottom on most of the rotations.