Re: new to hookah
Ice water in a little generic pumpkin is tricky, because the base is so tiny. Although, when I got my first hookah (probably similar to yours) I was able to get really thick clouds with Al Fakher and Al Waha.
Make sure you're letting your coals heat all the way through before placing them on the bowl. I'd use one instant light, broken in half, and place each half on opposite edges of the bowl or use 1.5 natural coals, here again, broken into halves. Definitely watch the videos here for bowl packing and heat management techniques. And try smoking without the diffuser and see if that doesn't help.