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I second Miyuki. Your fear is in your doubts. Practice and self-confidence will get you where you want to be.
I second Laura. A matching necklace and / or bracelet would add greatly to your presence. Find something nice that goes with more than one outfit; shop at a charity thrift store such as Goodwill, Salvation Army.
I think you look fine in your dress, 'E', though spaghetti straps can make your shoulders appear bigger proportionally. Your hair helps cover your shoulders. Your hair style in your second picture is more feminine; that helps your appearance and presentation. You look good in your second photo.
The color of the top you are wearing in the first photo does not seem to go well with you. Try different colors; find a color scheme that works with you and stay with it. That will also make shopping easier when you know you limit your wardrobe to a specific color.
You are correct, 'E', tank tops can make your shoulders appear bigger than you want them to appear.
It took me a few years till 'male fail'. Along the way, I dumpt my male clothes and I wore uni-sex female attire while transitioning from male to female: jeans, tops, sweaters, pull-overs, etc. I look back at some of the female attire that I wore as a male moving into 'male fail' and wonder how anyone could see male.
It was probably the time on ERT that added to my change; changed appearance due to hormones, no more facial hair, no more body hair. I used the cue that when strangers more likely saw me as female than male that it was certainly time to go female full-time forever - that I at least made the stage of 'passing the 'passing' test'.
In time, I eventually realised my female-hood; I am female, I present as female, people take me as female.
Check out the threads here at 'Susan's' where we post our 'before' and 'after' pictures for a good idea of your brighter future - change will occur and you will enjoy it.
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