Level of Knowledge

Every day Everyday, I try to make be involved with some English activity in English, like such as writing, listening or speaking with somebody. I know that it is a hard and difficult to learn another language. Sometimes I don't even know if my English level is growing up improving because when I'm speaking I try to cannot hear on myself if my the pronunciation and the entonation enunciation sounded correctly. and it doesn´t sound well. So it´s my impression.

The best is to get yourself a digital recorder and play it back to yourself.  You will be then able to hear yourself.  Trying to hear yourself directly as you speak will not give you the true sound of your voice.

Level of knowledge

Every day I try to make do some activity in English, like write writing, listening or speak speaking with somebody. I know that is a hard and difficult to learn another languaje. Sometimes I don´t know if my English level is growing up improving because when I´m speaking I try to hear on myself listen to the pronunciation and the entonation and it doesn´t sound well good. So it´s my impression.

Very good!

Difficult and hard in this context mean the same thing.  You don't need to use both.