Your dresses are gorgeous! I love the baby blue color. The infinity dress is so awesome, looks great on everyone and easy to make!
Ohh I love the bottom!! Is it a square skirt or are you just really nifty or both?? LOL I'm terrified to try one of these, I want to because I want to make them into my bridesmaid dresses and my after the wedding dress but I don't want to screw it up... and I can't quite understand how the straps stay in place... I also have NEVER sewn clothes before and that terrifies me as well...
Good Job though!
The skirt is exactly like a circle skirt, except it's a square (which also means hemming it is a lot easier). There are tutorials on craftster somewhere.
The sleeves: the top portion of the infinity dress is just 2 pieces of material that you can wrap and tie in different ways. I used the idea for a dance top and just tied everything in place and nothing moved around too much. I would use a stretchy, knit fabric though, almost like a t-shirt.