The first one is more of an example of how I didn't look at perspective, hence a very wonky coaster under the can! I was really disappointed, as I was enjoying myself until then!
In the second, I was too scared (!!!) to draw the logo in case I stuffed it up! Also wish I could do better reflections. By the time I drew the second one, the coaster had been replaced by a placemat.
These are both done with my favourite medium, dry sanguine pencil.