I watched your video! I can't believe how fast you reached at this level only in three weeks. sugoi :D

here several things that I would correct:

0:27~

Pod Cast to hon de nihongo wo benkyou shite"imasu".

0:36~

Nihon no ...... ni sunde imasu.

I couldn't hear well here.

0:57~

Internet no kaisha de shigoto wo shite"imasu".

Use "imasu" to say about the things that are actually going on now and what you are currently doing.

1:02~

kinou ha ichi jikan shika nenakatta kara, (since I only slept for one hour,

kyouha nemukute, tsukarete imasu. (I'm sleepy and tired today.

1:20~

Sanpauro wo misetai to omoi masu.

2:13~

watshi no kinjo ha ...? desu.

maybe better say it slower ^^

2:37

watashi ha haha to ....... shimashita?

2:57

minasan(=you all, in formal way) ha ki ni irimashita ka?

did you all like it?

3:04

close it by saying "ijou desu", meaning same as soredake, but this is how we typically close the presentation or sth like that.

I liked your video so much! nice try and I didn't know that Sao Paulo was that big city ;) Keep it up!