The proportions of the dress are off, there’s too much fabric in the skirt and as a few other posters have mentioned, the fabric is a bit bed linen-y, although I think curtains-y would be more accurate.
Anyway, and more importantly - you weren’t sure about it last year, you’re still not sure about it now you’ve bought it. Return it, because I am pretty certain you won’t wear it should you keep it.