Would be good if you'd put both pictures here. So people know what you mean.
I guess there are several ways.
First would be the drawing part.
Second could be to cut them out from the sprite they exist on & then just layer them under the sprite you want to modify & save it as .png.
Like this you'd only need to scale the ties, so they fit the sprites, but would not touch the original one.
But this is just raw guess. As I'm also not sure what you mean.
;Filename of sprite data