Im trying to digibash smokescreens helmet yellow but it is coming out like

can anyone tellme what im doing wrong?
(note this is the original image:

 

It's been a couple years since I've had access to Photoshop, but I used to know my way around... describe to me how you're doing it, because I think I know how but I'm not sure what you're doing to get the results you're getting.

I think the easiest way to do it is to use the... damn, I've forgotten the names of the tools... not the magic wand tool but the tool you use to draw lines around the shape. Then you select that and adjust the hue and saturation until the color yellow you want comes up. Did you try something like that?

 

Dont worry i figed it out

 

Cool. Post a pic when you're done? And how you did it?

 

I was going to do Smokescreen as Armada red alert but i decided that Hound would be a better choice.
Here it is:

As for how i did it i selected the are i wanted to alter with the polygon lasso tool. The i moved the selected area to a different layer. Then i desaturated the section (image/adjustments/desaturate). Then i use a variety of tools in image/adjustments