The stock Dark Toys figure/ outfit is limited without futzing/ modification as to how well you can dress the tie due to the neck and shirt tailoring, since the position of the top shirt button and collar are at an angle on the neck which causes the length of the tie to lift up. An easy fix is to simply wet the tie and keep pressing down. And repeat - I did this several times. I did this in conjunction with spray starch and a wet iron of the tie to make it neat, wrinkle free and to keep its shape. Re-working the collar and its fold with the same method will also help, which I also did. You can also use Deckard's blazer if it is still sticking up/ out from his body to keep it flatter to his chest. I also mimicked the lengths of both the front and inside parts of the tie as it looks in some/ most set photos and moments in the film. Finally, if I recall correctly, the stock DTs chest isn't very good and accurate to Ford's/ realistic and sticks out somewhat, causing the tie to push out. So, the BD005 may have also helped with easier dressing of the tie. The shirt definitely fit better on the BD005, though.
I believe all of the below photos are after I swapped out the stock DTs body for a BD005, which someone else uses and recommended to me. The BD005 is a cheap MMS261 ANH clone, so it is basically Ford's body. But the shoulders aren't the most natural looking and orientated, and suffers from the same issue with many 1/6 bodies in that they don't have a natural sloped curve but instead are very horizontal and stiff like a coat hanger. From what I recall, I don't think you can pull the shoulder joints down for a more relaxed shape and posture like you can with some better bodies. I think the outfit as a whole also doesn't fit the BD005 as it should, adding to this stiffer look, since the shirt sits higher up his neck on the BD005.
I didn't like the BD005 much for the above reason. Whilst it corrected and gave Ford a more correct height, adding realism to the figure, it made his coat and trousers a bit too short. His shoulders and posture looked off to me, too, a bit too stiff and awkward. I have a various other bodies now for my next Deckard that I know will work better.
I believe all of the photos below are on the BD005. It's surprising how off and short he looks on the stock DTs body when you compare both. Note, this my old Deckard figure which I no longer own. I added a wet rain effect to his coat but it might not show well in the photos:
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Dark Toys and BD005 comparison:
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I hope that helps, all the best with your Deckard,
@potato.