KEEP -- #1 & 2 - brown sleeveless
This fits you quite well, and it is an LBD but brown, not black. There's so much you could do with this.
KEEP -#3 - black and white sleeveless. (same as #1 only different color)
You duplicated in a print because you knew the fit was so flattering. This print is awesome and you could have so much fun with it, adding pops of color.
Toss - #4 &5 - Black, red, white shortsleeve
Do not like the sleeves on you. The skirt, to my eye, looks dated.
KEEP -- #6 & 7 - red and white sleeveless
I love this on you. Such a flirty sundress. I could see wearing this to a summer wedding. Or with sandals to run around town on a hot day, to have brunch outside, with big glamorous sunglasses. Even if you feel it's not your style, personally I would hold on to it. Because I am not really a flirty sundress type but there's always that handful of super hot sunny days when I wish I had the perfect sundress... so I have one or two in my closet and though I may not wear them as often as the rest, they have their place and they do get worn.
Tailor? -- #8, 9, 10, 11 - confetti print
This has potential, but I'm not sure about the fit. It looks like it might be too large on you? Or that is the style, and it's just not the best for you. It might be worth taking it to the tailor. Actually, taking another look... I change my vote to "you could do better."