Please point out my grammar (grammatical) mistake(s)

<strike>This</strike> (In) class we learned “Professional Etiquette” <strike>with</strike> (with the) DEPT teacher of our school. <strike>Her dressing</strike> (The way she dresses) is <strike> rather elegance</strike> (elegant). After she introduced herself, <strike>and then</strike> (she) started teaching <strike>our </strike>(us)  about “ How to dress for success”.
Her voice was strong and clear. We learned many things from her.
For example, <strike>about </strike> (she told us)<strike> </strike>how to <strike>making</strike> (make) <strike>an</strike> (a) good impression <strike>to</strike> (on) your boss
and (also) something about (how to) choose your office suit. She <strike>use</strike> (uses) interesting teaching methods. <strike>for us.</strike> (We now know many ways that we) can make a good impression on our boss or colleague(s).

It is unclear to me what you are trying to say? "Lose my way" is a figure of speech that implies you deviate from a moral path. Or are you trying to say you get lost in Ukraine? In which case you'll say "I often get lost in Ukraine"

Soap Heaven （this's press release, and I worry about the mistakes but I don't know how to correct)

Soap Heaven is pleased to announce (that) a new CEO is joining the company<strike>, and</strike> .The company also has ambitious expansion plans (to move) into the new EU markets. Soap Heaven is a company which specializes in soaps, shampoos as well as skin-care goods. The company's products are aimed at both the female and male teenage market, mainly for Western Europe.

Introduction

My name is Escape. I'm 27. There are two people in my family: My mother and <font style="background-color: yellow;">me (I)</font>. <font style="background-color: yellow;">I (My) </font>favorite color <font style="background-color: yellow;">are (is)  </font>black and white. I <font style="background-color: yellow;">am</font> from china. I live in Beijing. I can speak English and Chinese. I like playing computer games, running and sleeping. I can drive, sing and cook.