Voice/mannerisms/facial expressions will always be the biggest component in one's ability to pass. Also, find a style which compliments one's form and does well to emphasize one's feminine attributes.
More masculine clothing can help a lot in this way.
Many here may balk at the suggestion, but hear me out, because if passing is something you strongly desire (with as minimal surgeries as is possible) then understand: it IS possible, but it may require certain "sacrifices." Meaning being femme may not be an option because such styles may contrast too much with and bring out your more masculine features, whereas more masculine styles will do well to bring out your physically feminine characteristics.
If you're looking for an honest response, dressed in the outfit in the full-body pic, I would probably clock you. But perhaps if you wore jeans, a t-shirt and a jean jacket (and they can all come from the women's section if you want), then you'd probably be able to "hide" it a little better. And there being a visible sense of ease in your movements, mannerisms, and vocal inflections will also help you better to pass.
Early in transitioning when everything is forced, no matter how good you look in real life, people will know when someone is trying really hard to present in a way that is not natural to them (yet). If you are familiar with the concept of the "uncanny valley" which is the point in which a human form is both so realistic and yet so artificial in its appearance that it is uncomfortable, it is somewhat similar. Everything you do may be completely on point but because it is not yet natural and a visible amount of effort is put into maintaining it, the dissonance is clearly evident. This can only be fixed with time.
Appearance-wise, consider looking in to how masculine women might dress themselves and see if you can find a style that brings out your female features.