A person can make a miracle.

When humans talk about a miracle they think it can made only by God  (only come from God). It is not so. Every person is able to (preform might work a little better here) make a miracle   
Today I read a story about a little boy. His parents abandoned him. This woman in the photo took him and saved his life.So this women made a big miracle. She changed this kid's life and she also changed her own life. Now look at how happy this kid is. I think this woman is even (even suggest a slight surprise of contrast) happier than this kid.

Thank you for reading and for correcting.

Hope this helps! : )

A person can make a miracle.

When humans talk about a miracle they think it can be made only by God. It is not so. Every person is able to make a miracle.
Today I read a story about a little boy. His parents abandoned him. The woman in this photo took him in and saved his life. So this woman made a big miracle. She changed this kid's life and she also changed her own life.* Now we see how happy this kid is. I think this woman is happier than this kid.

Thank you for reading and for correcting.

*you can also write  '...changed her own.'

Very well written! (but don't forget that small little super important word 'be'. To be or not to be?) To be.