I will be more positive! As a buyer, I See-I Want-I Buy, without looking over the reviews. When I do look at reviews it is not when I'm buying, but is out of curiosity when a seller seems to have a problem with low numbers or partial stars. I have concluded from this 'research' that many people don't know how to leave feedback (good to provide the steps when you send confirmation of mailing), when cell phones are used to give feedback there tends to be a glitch and partial stars show up, people do things so fast without reviewing their actions, or they aren't regulars and don't really care. One occasion I wrote to a buyer of another seller, whom I did not know, to question the feedback given. It turned out she meant to leave 5 stars (cell phone glitch) and since corrected it and probably made the seller very happy. You can increase feedback numbers by writing a follow up note to ask about satisfaction, etc.
From my research I have calculated most sellers have an average 35% rate of feedback, one had 6 sales and 100% which may not last, a three had 67% and some under 25%. These numbers say people don't know how or care to leave research. But I will admit, like mom said, if you don't have anything nice to say, don't say anything! So in cases I don't leave feedback, but will privately tell the seller my opinion.
As far as a perfect 5 star score, I was proud to have it until I encounter a few people who changed that. Look on the bright side, if we had 100% participation and 5 star average, it would seem wrong since no one is perfect.
I will add what disturbed me most was stupid people or people who couldn't read or understand the concept of simple math leaving poor feedback. That is totally unfair. One I read said the item wasn't as shiny as picture and she had to use brasso to polish purchased item. Another wrote the item was too small though the item was listed as TINY and 3/4". Someone said shipping took too long, yet didn't take into account that China to US shipments will take more time than a US to US shipment. One last one was a lady who didn't know 15" wouldn't fit her neck when she purchased the choker. None of these sellers deserved the 3 or 4 stars given to them since all of the 'problems' were from buyers who didn't read or measure before they bought. Unfortunate.
Most of us have 'Feedback Anxiety' at one time or another and for some it is an ongoing affliction, sad but true. Just pick yourself up and try to do your best.
As far as your packaging problem, whatever the reason for it, just learn from your mistakes. Etsy has a long learning curve! I too had a few packaging errors and persevered. Luckily my buyers were considerate in knowing I was new or maybe they were just calm level-headed people who understood that nothing is perfect in life, no one, nothing!
In short, just keep aiming to do the best you can and improve with each error or mishap. Don't feel deflated by the feedback given whether deserved or not. We deal with people we don't know, who may displace anger, be sick, or have a reason for being mean,