Good effort. Usually you should post texts like this in Notebook, but it's fairly short so here's a quick rewrite:
"This is a video about Valencia. Valencia is very different to Salamanca, where I live. My city has a lot of tourist attractions such as the main square or the house of shells, but Salamanca is not near the beach, nor does it have industrial factories. I've been to Valencia and I think that it is a beautiful city, but not as much as Salamanca."
Observation: for a video about Valencia, you've written a lot about Salamanca.