Thank you for doing your homework, Lisa!
You did a very good job!

CORRECTIONS:

There are many things different point in writing aetter and sending message.
>>There are many different points between writing a letter and sending a text message.

First, writing letter is written by hand but sending message is written by keybord.
>>First, a letter is written by hand but a text message is encoded through a keyboard.

Next, writing letter need much time to send.For example when you put the massage in the mail box, the letter goes 3days later.
>>Next, writing a letter needs much time to send. For example, when you put the message in the mailbox, it arrives three days later.

But sending message doesn't need much time.We need 1second or 1minute.
>>But, sending a text message doesn't need much time. It takes only 1 second or 1 minute to send it.

Last, writing letter takes place restrictions. But sending message can send anywhere.
>>Last, there are place restrictions when writing a letter to someone. But we can send a text message anywhere.