It really does depend. When I first began T I gained a lot of weight in general, like 40lbs over the course of 4 or 5 months. Which for my body type was an excessive amount weight, it's the only time in my life I even tiptoed the boarder of being overweight. At that point my face was pudgy and there was a huge difference in how I looked before I began T and at that point in time.
My doctor switched my meds (the ones I take for being bipolar) and I lost all of that weight fairly quickly. For 2 years now I've been back to my original weight and my face looks pretty much the same, a little more square but not a lot. Unless you look at pictures of me before and after right next to one another you don't really see the differences.