Is this right?
Hello I wanna ask you to answer my poor questions.

I wanted to make a sentence like this

I hope you can understand what I wanted to say

-
1. If I were lighter, I could fly faster
2. If I were lighter, I could fly more fast

which one is better?

and if there is a bad things in my sentence, please tell me about it.

thank you.

Question

Is this right?
Hello I wanna ask you to answer my poor questions.

I wanted to make a sentence like this

I hope you can understand what I wanted to say

->
1. If I were lighter, I could fly faster
2. If I were lighter, I could fly more fast

which one is better?

and if there is a bad things in my sentence, please tell me about it.

thank you.

Answer

The first one is correct. "Faster" is the correct word

Answer

"more fast" is incorrect. It is a short word so the comparative is faster, not more fast. The conditional part is correct.

Answer

From the sentence you are using it would be:
 1. If I were lighter, I could fly faster.

Answer

"If I were lighter, I could fly faster" is the correct answer.

When creating the comparative form of an adjective, all short, 1-2 syllable adjectives simply add an "er" to the end:
longer, faster, greater, poorer, tighter, etc.

Some of those types of adjectives have doubled consonants:
bigger, taller, hotter, etc.

For longer adjectives with 3 syllables or more, you use "more + (adjective)" 
more interesting, more difficult, more peaceful, etc.

There are exceptions though, so you just have to remember them:
more fun,  good > better, far > farther,  etc.

This is just a quick description of some of the rules for adjectives in the comparative form. There are more details to be known, so have a look at this link if you would like to learn it:

http://www.eflnet.com/tutorials/adjcompsup.php

I hope this helps! Good luck in your studies!