[color=orange]Hi,my name is yasmin. I'm a starting writer and english isn't my natural language, so be gentle.

please tell me what you think of my story.

It was a hot day. The lake beneath the trees was shining, reflecting the few light rays that went trough the branches.
Two trainers approached the lake. Their eyes widened with joy when the noticed it. One of them, a short girl with red hair, ran to the lake and dived in, waving to her friend. "com'on, the water is great!"
the other trainer dropped his back pack and jumped inside making a huge splash. He bumped straight into a wild magickarp, which struggled to get away, and somehow landed on the red haired girl's stomach.
The trainer laughed. "Hey, Leo, look what we've got here!"
they decided to have some fun with it. Leo sent out his pokemon, a poliwhirl. "Poliwhirl, let's see how far you can kick it..." he giggled, poliwhirl attacked with a mega kick, sending the fish pokemon flying until it hit the ground by the lake side.
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Daniel walked inside the forest, too furious to notice where he is going.
It was the same old argument. He was already 12 year old, all his friends had left to their journey. Some of them came back, showing their badges with pride, and they all had pokemon.
Why can't his parents understand that? Can't they see that pokemon aren't dangerous? If he only wasn't so sick all the time, he thought bitterly.
He stopped at once, before knowing why. Then he noticed a magickarp on the ground. "huh? How did you get so far from the lake?" he looked at the injured pokemon with a spark in his eyes. "Don't worry, you'll become powerful one day

Not too bad. The only problems I see here are grammatical and because you said Enlish isn't your natural language, take this as just friendly advise.

my mistake.. Jinger is a girl.
thanks. I'll fix it.

[color=orange]"Well, I can't see how it can be dangerous, Marty." Daniel's mom inspected the fish pokemon. Daniel's father looked skeptic. "Oh, please, dad." Daniel gave him a super cute look. Marty sighed. "Fine, but if it attacks you even once, he's out of here."
"Yay! Thanks, dad." Daniel grabbed his new pokemon and ran outside.
"Hey, we have to celebrate." -"Magick" agreed the pokemon. He noticed Jinger going out of her house down the street. "Jinger! Over here!" she reached him smiling." How did it go?" "I told you they'll agree. Can you believe it? I'm a trainer now!"
Jinger was relived. She stood in front of him, smiling. "Well, then you have to battle. Com'on." Daniel looked excited. "Let's do it. Go Mgickarp!"
"Go, Caterpie!"
"Magickarp, attack him!" Magickarp flapped his fins, but nothing happened.
"is that all you can do?" Daniel looked at him.
Jinger blushed. "oh, I forgot. Magickarps learns attacks only after some training."
"It's o.k. then we'll just have to train before battling again."
Back at home, Daniel hugged him "Don't look so sad, magik. I'll make you stronger, I swear." They went to the backyard, and Daniel threw a ball at him. "Push it back at me, Magik." They trained for hours, before magickarp eventually learned to tackle.
Day by day they battled in the fields near the town, beating at first kakaunas and metapods. Until one day, Daniel felt they are ready to face a trainer.
He stood at the paved route that came out of the forest, waiting for a trainer.
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Jasmin came out of the forest, on her way to Rustburo's gym. A gentle looking boy looked at her, and started saying something, but stopped, unsure of himself.
"What is it? Do you want a battle?" the boy nodded, and she send out her newly hatched Chikorita.
"Go, Magik ! "
"Chikorita, use tackle!"
"Magik, head but!" the pokemon bumped into it's opponent.
"That's tackle, you know." Jasmin gave him a confused look. The boy looked up at her, and blushed. "Well, then it's a head tackle... Do it again, Magik!" the pokemon dodged chikorita's attack, and tackled again. Jasmin blinked, and shook her head. "Whatever. Chikorita, keep tackling it." After a while, Magickarp looked like it's about to faint. "Finish it, Chikorita!"
"No way! I'll win this battle!" Daniel pulled a super potion and used it on magickarp.
Jasmin sighed. "You can do it, Chikorita, just tackle again!"
After another 5 tackles, the battle looked like it's about to finally end. But Daniel just used another potion. Jasmin got tired. "Aren't you a stubborn kid."
"Finish it, Magik, tackle!!" and the battle ended.
Jasmin sighed. "Fine, you win. I must admit you're a good trainer.." she pointed to her belt. "I do have other pokemon, but you're just a starter, so it won't be fair." Then she remembered something. "Hey, you're dependable." She sent out Ariados.
"Woah, I can't win that thing!" Jasmin laughed. "I know, would you like to have it? You take care of your pokemon very well." Daniel was surprised. "Just like that? Why are you giving it up like that?" a spark appeared in his eyes. "Is it not good enough for you? People like you don't deserve to have pokemon!"
"Hey, relax. It's not like that. It's just..." She sweated, "um

i like this storey, ive only read chap 1 but its realy good.........can poliwhirl learn mega kick

NIce scyther-girl! Very good for English not being your natural language, and keep up the good work!