Hi @paola-vnzla. Welcome to the community. First of all, I think you should write some more. I would recommend you to keep your word count between 500 to 1500 words. It would be good for you and your readers.

• Your picture is copyrighted. You can't use them without the original author permission. Please refer here if you're not familiar with what I was talking about.

• If I were you, I would avoid tagging people like you did at the end of the article.

• This is your article. Take some time to research about stuff and write it in your own words.

If you have any problem regarding STEM-related articles, you can join steemSTEM Discord Channel and we will be glad to assist you.