Sometimes you have to work hard to drink some juice 
I love the lighting and textures, the only think I would suggest is having the straw distort a bit in the drink/red liquid. When light goes through liquid in the glass there should always be a different kind of light refraction happening. Other than that I love this great work!
You are right… i didn’t notice this until you pointed it out. Thanks for the tip 
Nice job on this and good creativity.
The only thing I can see that could maybe be improved, is it looks like your getting a little barrel distortion on the background image you are using.
Nice image, I like the materials ! But, in my opinion the contrast is too high, I think the image will look nicer if you lower it.