Yes very good question. It is best practice to start a new thread when you have a new coin to post. This is because some folks use the search function (in the upper left hand side of your screen) to look at old posts. For example, this thread has 1938 in the title, but if you now post a different coin from 1947 (or whatever), then this is lost because it comes up in the "wrong" thread. Within a single thread, you should be totally fine include a full pic of the obverse, reverse, and then one or two pics of whatever specific issue is of interest. Make sense?
"If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz