Hello! I thought I would show you all how to make your photos in your post column (ie. right here) the same width as your text. Many people (myself included) believe that it looks better when all of your photos are all the same width. However, even when you put all of your photos to large or extra large the vertical photos often do not widen to the size of your column. Thankfully, it is pretty easy to fix this.
2. For step two you need to first upload your photos and make them extra large. If you are just learning I would say upload only one at a time to keep it a bit simpler. Then look at the top of the post editing box where it lets your switch from "compose" to "Edit HTML". Look for the part of the code in the photo below. It should be segregated on it's own.
4. Switch back to compose and your photo should be larger and fit your column better. Please let me know if you have any questions at all.
Note: This is how I change my pictures, however it has come to my attention (through comments) that you can also doing it by finding the percentage of change between the two photos so that they don't look as wonky. Check out the comment section if you want to know more about this!! :)