Yesterday was a really good day, I did my routine as normal, but atin the afternoon, around 6 PM, one of my friends messaged me and it says about go out and see an expo ofshe asked me if I wanted to go see a graffiti expo.

I picked up another friend and we went to the expo, there was. my friend and his crew were there.

As normusual, I'll get started talking about yesterday.

"As usual," is something habitual.
"As normal," indicates correctness, as if done properly.

Yesterday was a really good day,. I did my routine as normal, but atin the afternoon, at around 6 PM, one of my friends messaged me and it says about going out andto see an expo ofabout graffiti.

Here, "as normal" works, it implies that you did your routine "properly" without straying.

Obviously, I said 'yes' and Igot dressed (up).

"Dressed up" implies getting dressed more elaborately than usual, like to go to a wedding or maybe to a club. If you just mean putting on clothes to go out (in general), it's just "got dressed."

I picked up another friend and we went to the expo,. When we got there, wase found my friend and his crew.

We drankhad some glasses of beers and sawchecked out the expoart.

We would typically just say "some beers" or "some pints (of beer)" if they were served in pint glasses. We also usually just use the word "had" in place of "drank" or "ate."
I suggested something more natural for the end. "Checked out" being a casual way to say that you were looking at the art pieces with interest.