How do I create my own sprites for an original platformer?

[Drona]

Hi,
please check your other topic. You got a good suggestion there.

How do I create a platform character that doesn't instantly drop off the screen

Just add the platform behavior to the platform and it will not fall of if you want it to not go sideways out then place those platforms with platformer behaviour and place those outside the screen so they work as borders

Your player-sprite has the platformer character behavior but you also need to attach the platform-behavior to your platform/surface-sprites. Otherwise your player will fall off the screen.

This tutorial here introduces you to the basics of making a platfomer:
https://wiki.gdevelop.io/gdevelop5/tutorials/platformer/