Pinhole Photography

You may be thinking what on earth are these...... BUT i took these photos with a biscuit tin with a hole in it..... yes you read that right.
Now i may be late to this show but i had never heard i could do this until a few weeks ago. (i have heard about pinhole photography but not quite like this)
This biscuit tin contraption had photo paper slotted inside which needed to be down in a dark room. You then expose the paper inside by uncovering the pinhole- always time how long you are exposing it for. 
Now these above are my very first pinholes and if they look as effective now what would they look like if i was an expert?!P