Once the photos are uploaded two quick and simple extra steps are required. The first is to click on the link under the attached photo which reads "insert into post body" ... which gives you 3 choices for the photo’s size and then inserts (embeds) the picture where ever the cursor is flashing. You seem to have this part down. Congrats!
The second step is to check the box which reads "collapse attachment box" in the left hand column, under "settings". This removes unnecessary clutter from the bottom of the posts. You hadn't taken that second step so I’ve performed a bit of editing to your posts.