Well, it's not too bad. I started like this too, and I improved over time ;)

any suggestion ?

Keep writing :)

any comment?
i dunno why ,but i feel stupid when i read my story

I agree with others that there is a little of actual story and the focus is on transformation. The whole chapter can be summarized in few sentences. Try to extend it by giving out some descriptions of surrounding and activities not related directly to tf.

That's not too bad.

As Ben300 said, it got better towards the end of the story. You seemed to be in your element when writing the TF, which makes sence.

My advice is to try and expand some more, add a little length with character development and filler and such.

You'll get the hang of it.

Well, costume TF aren't my favorites TF but, in this one I can feel some sensations, so it's really a good start x)
But you can do better :D

it may be a difficult question to you ,but which part of the story can be better?

When I read the story, I kinda felt like when I was reading my first one.

I'm not the best of critics, if you want someone to really help you out, go seek  MLR. He really helped me out on my story.

Most of your story is good. The main thing I would say is to reread to check the consistency of verbs. Sometimes, you write in present, others in past, you even wrote both in the same sentences a few times.

The second thing I would say would be to create an environnment. We can see really well the transformation, but he might as well be floating in space for all we know. Just little things like 'He opened the box after entering his blue/green/bright/dark/whatever room' gives us a place in which the character evolves.

After that, I'd say to work on subtility. It's not something that can be taught, it comes with practice. You don't need to write everything, you can hint at it in the text.
For example, this: "What the heck is "automatic wearing function"? He suddenly felt he should put off the darn thing and threw them away. Or he should analysis the strange material first? Many thoughts ran though his head. But he still touched the latex as he couldn't wait for another chance."
could look a bit more like this: "He idly wondered What the heck an "automatic wearing function" was. He felt like the darn thing was wasting his time and that he should just throw it all away. Still, he did pay for this, so maybe he should try it out at least once. After all, he didn't have much more time for finding another costume. He didn't even realize what he was doing until he felt his finger enter the thick substance."
I don't mean you should rewrite your whole text according to this, I just want you to realize that to get emotions across, it's more effective to imply them than to write it out.

Also, you should avoid writing things out as if they were obvious. You could've at least written two whole paragraph about just these three sentences: " As he was thinking , gust of wind began to collect around him. He awaked his new ability of control wind. Although the wind had a calming effect on him ,his problem hadn’t solved yet."

Lastly, to make your character's reactions more realistic, imagine how you would react to what's going on in the story. There's no other way I know of to get human reactions as accurate as experiencing them oneself. And please, give him a name, give him a personnality, give him humanity! He's a person, yet he has no name. Right now he's latex-pseudo-Shiron-transformed-person.

I don't usually like rubber tf stuff, but this one somehow caught me. I really hope to read the haloween party soon! Keep writing to get better.

Is this permanent? Looks like halloween isn’t going to end then.