I want my movie Avengers to Assemble, and these were a bit of work.

For Cap I took the MS Cap and heat and popped the arms off. Then I took a pair of jakks deluxe aggression shoulders and biceps, dremilled the shoulder peg to mock the ms caps peg size. I also reshaped the arms to resemble the material he's wearing with different dremil tools and sanded them clean. I repainted the arms white, and any white on the figure, and then aged it with different layers of dirt colours
I then took the shoulder pads and cut them off the original arms, and dremilled them to fit over the new arms. I made the straps for them and then freely fit them over the arms before boiling the torso to pop the new arms in. The shoulder pads now fit snug, and move in unison, without hindering movement.

I also added the strap for the shield, and repainted the face. mine looked like cap was wearing too much blush.

Thanks for the views!