How to make your own overworlds for starters

As you can see, poccil's kit, which is Pokemon Essentials, can be 2 sized screen.
If you are stuck by making Graphics/Overworlds. that is the tip.

1. Get a sprite from the game you like ( or the official games)
2. Go to Microsoft Paint
3. Open any overworld sprite, but Copy/Paste it.
4. Use your own overworld
5. Make it x2 sized
6. PRNTSCREEN it.
7. Open an another Paint program
8. Paste it
9. Copy your overworlds and put them at the Paint Overworld and copt the leg steps BUT CAUTION! IF THIS IS A WALKING SPRITE WATCH OUT FOR THE LEGS STEPS
10. Open Photoshop.
11. Make the size as the overworlds

...okay, that tutorial is just utter nonsense. The fact that you barely went into detail and included several unintuitive steps means you probably don't understand what exactly to do either. In the future try to include images or something for tutorials involving sprites, also.

Nice try, and better luck next time.