@qeex, did you try with copying an actual Bubble Tea? Shading and the "Color Flow" is very important! (I'm not sure if I've used the right words for it)
Liquids and transparent things are hard to draw for the inexperienced :)
Oh, uh...yeah it really depends on your tastebuds. There are tons of different flavour, and you may have gotten a bad/"chemical" one from McDonalds or the like! :D .. Try to make your own tea, they taste the best!
