The shadow on the can is too dark, I'd suggest repositioning the light source and toning it down a bit. It's specular is so bright the entire can should be MUCH brighter and the Ice cubes should likewise be full of bright reflections, but it's also so bright that it's distracting from the product...

thank u very much for ur suggestion . i'll work on it...but i havent learnt lighting yet. anyway ill try my best.

i've looked into the things u said.... but how do i update it?? cant i replace this image with the updated 1??

This is much improved from the original author well done, but it dose still look as tho it's floating Maybe due to camera angle.