Imrahil said:
See, that's far too washed out.
Oh, sorry. I think I lacked of clarity, then I will elaborate:
The one my post displays hasn't the right colors at this state, but it is uncorrupted enough to correct the colours what really makes it a great base. There's too much saturation on your colours (added to the fact they are wrong), what will make a hard work to get these back.
It's your choice if you're happy with the 1st picture that comes at hand, but if you take the time it needs to create a cover, you may take the time it needs to find the best picture available. And I assure you it is worth for the pleasure it gives to work with such material.
I could post a bunch of links here, but the time it would take for me to find these again is the same time it requires from you to find these by yourself... That's just part of the work. ;)
Now if you want better references...
The 1st one is about 2000 x 3000 pixels (Leia alone is about 900 pixels high!) and is a good reference for both colours and contratsts. It is definitely the version I'd work with but I think I remember I have even better.
The 2nd one is around 1500 x 2100 and is a nice reference if you want to give some warmth and depth to the first one. It's also a good reference for what is to be avoided with saturation and contrasts.
Now, just take a look at your cover again...
Anyway, D_J has made something exeptionnal with his set as it seems, so perhaps he deserves the best from the minor art that consists in making a good cover...
PS: That said, I think the one above is definitely the more "Classical" cover you can have for such a restoration, and only I would add with discretion above the poster the mention that it is the original theatrical version. No more, no less.