Thank you Lynn! Let me try and explain the enlarge photo function without it getting too messed up by the Steemit markup. I had the same problem copying the link in the tutorial. Here's the code that you need to enter right after the code for your image:
LTa href="YOUR WORKING URL HERE" rel="noopener"GT[Click here to enlarge photo]LT/aGT

Just replace the LT with < and the GT with > and paste in your live URL between the quotes.

I hope that makes sense. Let me know if you have any questions.