Hi Charles and welcome to the forum
Good to hear you have gotten off to a decent start, even if you don't quite have your shipping sorted lol. It's lessons like those that are good to learn at this early stage before they start costing you too much.
I wish there was a easy tip section for dropshipping, but in reality, it can be a damn site harder than most actually even consider. It's research, research and research, it's pretty much constant research. You have to know your market, know your competitors, know your prices, have reliable suppliers, develop good marketing strategies............
It just goes on and on. Best advice I can give you is to stray away from the top selling items and that is simply because you will never compete on items like those with dropshipping because you will be going up against some very big players dealing in massive wholesale volume. So stay clear of those type of items, try to get out of the spot light and into the shadows a little
You should look for markets where some money can be made, but the comp isn't that great because the big volume of sales just isn't there.