I think I would make it longer as I want to be bare legged in the summer and that is too short as it is without tights or leggings I think. I also think I would make the top panel a little bit shorter so that when you add darts to the top of the shift dress you don't have an interruption where the two panels meet. I can't see any darts on the one in the photo but I would want it fitted with a central back zip.
I also think the colours of fabric you use do not have to be similar you could use contrasting ones. I think there are lots of possibilities here and I am going to have a look at what I can do. If you use jersey fabrics there would be no need for fasteners you could just pull it on over your head.
So that dress is item number one I'm going to make for little or no cost ( a small cost for zip maybe). I did say I had enough clothes for my holiday but that means I won't get to sew anything so scratch that! As long as it is very little or no cost it's ok.
The other item I would like to make is a black jacket casual but ok if I was dresses up, I don't want a formal jacket and I already own a black leather jacket so something more suited to spring. I saw this but I don't like the shiny parts on it...