In addition to the corrections from Frank, I would change the first sentance a little bit...

Describing myself

Well, it is a common question asked in English class, specially when you're the new student entering the class. How to, where to start? It is a little difficult to start, when you try to 'think' in english, but the main ideas that comes to your head, are in spanish. What a challenge!

So... my name is blah, I live in blah, I work as a blah... you get it.

But, when the difficult of the questions start to rise, then comes the panic! How do you see yourself in five years from now? What is your motivation to learn a foreign language?

Describing myself

Well, it is a common question made at the English class, especially when you're the new student entering the class. How to, where to start? It is a little difficult to start, when you try to 'think' in English, but the main ideas that come to your head, are in Spanish. What a challenge!

So... my name is blah, I live in blah, I work as a blah... you get it.

But when the difficulty of the questions start to rise, then comes the panic! How do you see yourself in five years from now? What is your motivation to learn a foreign language?

[Very good.  You can say "in five years" or "five years from now"]