If you've never tried any psychs before, here's what I think is reasonable to expect from 1.5 grams (dried cubensis?)
-colours seem brighter
-colours might flash or change in hue and/or intensity
-pattern recognition enhancement (looking at a woodgrain surface or stucco the surfaces might seem to flow and ebb/breathe)
-visual patternining (kind of like a light watermark or hud display superimposed over your visual field).
-looking at yourself in the mirror (and some people say don't do this) you can appear happy/sad, young/old or beautiful/ugly at the same time. Or possibly your face might rapidly morph back and forth.
-time might seem to stretch on and on and on
-your emotion can switch from one moment to the next from laughing to crying.
-listening to music can sound unbelievable; you might hear aspects of a song that you never realized before/
-closed eye visuals can be swirly, kaledooscopic, fractalized scenes.
-upset stomach, perhaps nausea
-a bit of panic and/or frantic feeling of your brain is broken.
-food can taste bleh or like God's personal gift to you.
There's much more, but you get the general idea. Cultivated mushrooms tend to be somewhat stronger than wild, picked shrooms. Personally I love mushrooms and intend on keeping doing them until I'm dead or imprisoned.
Good luck, and please report back in.
Tom