Player - Trainer Backsprites

[Niteslayer]

I want to "configure" the player's backsprite (when player throws the Pokeball at the
start of the battle, animation). I'm using BW Essentials Version.
The problem is that all the backsprites I find (on the internet) look like this ->

But the default image looks like this

What I can do in order to resize the image or automatically make it work?
Is there any way?

 

[Zeak6464]

 

[TheMikningBolt]

In paint, you can easily resize them by going to resize, and typing double the original number. Before you ask, you can make it transparent IN RPG Maker XP.

 

[Niteslayer]

Thanks for the images Zeak6464, that was really helpfull.

I've tried the resize thing but the image borders are not accurate on the frame change... Is there a resource link where i can find more bw essentials player backsprites or any other way to accurate resize them in order to show properly on the game?

 

[JoePikaFireGreen]

How to assign the photo to our player instead of Red's animation? I searched everywhere with no answers, please help if you know.