Sticky Sticker ? HELP

[Tigger]

I put my CS sticker on my rear window

There is still some sticky residue of the glue left on the outer surface of the sticker :S
How can I clean this off without damaging the sticker?

Thanks in advance for any help
Trev

 

[y0z2a]

white spirit & a cloth & a bit of care taken?

/y0z