I left it too late to edit, so I have to make a new reply. I had a look at your page. First up, close your store. You are wasting your money by having it. When you don't have many items listed and not many sales, there is zero benefit to having a store. You are throwing money away, especially when you say you are making little to no profit (not sure why you'd bother, but that's your choice). Unless you have over 200 items listed and making regular sales, pointless. These days, pretty much everyone gets unlimited free listings, so the days of needing a store to increase your listing amount is no longer.
Until you establish yourself and learn the basics of selling, I would only be selling to Australia. Close down worldwide. If something goes wrong with an overseas sale, and often they do, you're not going to know how to handle it. You will likely lose the money and the item.
You have a 1 day handling time. Increase that to at least 3 days, preferably 5, but still post same or next day. You set yourself up for disaster by having a 1 day handling time. There only has to be a small glitch in delivery times by Aust Post and suddenly you're getting unhappy buyers and negative feedback. By having a longer handling time, it extends the ETA. When the item arrives a day or 2 before the ETA because you still posted same or next day, buyers are stoked! So many buyers blame the seller for postage delays, even though they can see by the tracking the item has been posted.
