Jim, no amount of advice from anyone else can help you as much as studying real life pictures. Luckily Clyde Puffers were so common, and a number of them still exist, that good quality colour pictures are very easy to obtain. I would get yourself a few good close up colour shots and print them off on photo paper. Arrange them around your work area either pinned to the wall or even on document stands so you can study them as you play with your own model.
Just a quick glance at this picture will make you immediately aware of how the plate detail is not as noticeable as we sometimes like to think it is. As lot depends on light direction to determine how much we see. Take care not to over do it. The vertical joints in particular, in this case butt joints can only be determined from the rivets. At the front of Vital Spark you can clearly see a strake of plate at the top of the hull but look further back, you cannot see the plates at all. Even the bulwarks have to be zoomed into to see the rivets.
My point is this, be guided by real photos, not descriptions. You want your model to look like the real thing, so refer to the real thing.

The original that you can zoom into is here:
Vital Spark
Edited By Richard Simpson on 11/05/2023 09:06:55