Please help me (Japanese)

Hi 4chan,

I would like to speak a few simple Japanese sentences and really need your help. I tried online translation tools but I need the romanized words to pronounce it.

Really appreciate any help. Please help me translate these:

Hi, this is a gift for you. I hope you will like it. Happy valentine's day.

I'm a Japanese.

>>10 and >>28 are too polite.
>>15 is friendly.very good!

And "si" is pronounced "shi".