I'll have a go at this. ;3
So, Albert, a new trainer has just picked up his Poliwag and is ready for a journey, he goes into the forest and stumbles upon a Weedle, hoping to catch it.
Well, this is a pretty un-original story, but it's a Weedle, so your fine here. Just remember, when going for harder Pokémon you'll need to expand your plot and make it more complex. You should try and develop your characters as well, they seemed pretty much like all characters I read about; hopefull, jolly and cool. Maybe adding more unique personality to Albert, that would help. :) But yeah, this was your first story, so I have no complaints here.
Well, 3-5k isn't that hard to write in my opinion; so I felt you could've gone a littler further. But you got in between the two, which is what you should try and aim for. Just remember; it's ok to go over the limit. :3
This was fine, you had a couple of mistakes that a lot of people make, I'll just go over them with you. But before I do, one thing; words like "pokemon" and "pokeball" etc need to be capitalized, it's not exactly neccasary, but it's how it should be done. ;3 It goes for attacks, Pokémon names, anything associated to Pokémon needs to be capitalized.
Albert had a big build, he was a bit on the fat side.
You need a semi-colon after 'build' instead of a comma. ;3
Since it was summer he was wearing sun glasses.
You don't need a space in sunglasses. :)
That's all I really found, the rest were problems with capitalization (which I mentioned in the first paragraph) and one typo. ;3
This was a little sketchy. You have strong description, but you throw it all at us like a roleplay sign up. You need to try and add in bits of description as the story goes along. It makes it very tedious if you have a big patch of description when all you need is a couple of words. But this was just perfect for a Weedle in the places you described. AND OMG; you described the Pokémon, good job. A lot of people would tend to expect everyone to know what they look like, even though some don't. Nice job here.
This was good too. It was 2-sided, each Pokémon got in two-three attacks each, which is just perfect for the little tadpole and bug. I also liked how you tried to trap Weedle in the bubbles, then smartly Weedle popped the bubble; which I kind of predicted. But nice job here, just remember to describe your attacks a little more, they were kind of brief.
Sorry for the short grade, but this story is onky 4k-ish, but with the good grammar, battle and description; I'm going to say Weedle Captured!
Enjoy the little bug. Just make sure to think of more creative plots when aiming for harder Pokémon. ^^ Enjoi!