Custom editor like sprite editor

[bilalincid7]

My aim is to make Custom Editor like Sprite Editor. I mean, in the Sprite Editor, I want to make features like the larger the Canvas of the sprite, the larger the Transparent screen, or the box positioning. But I don’t know how to do it. I don’t know what to search on the internet, can you help?

(The Transparent part here is larger than the other picture)

Here is the box positioning.

[bilalincid7]

@bilalincid7

My aim is to make Custom Editor like Sprite Editor. I mean, in the Sprite Editor, I want to make features like the larger the Canvas of the sprite, the larger the Transparent screen, or the box positioning. But I don’t know how to do it. I don’t know what to search on the internet, can you help?

(The Transparent part here is larger than the other picture)

Here is the box positioning.

Here is the box positioning

[bilalincid7]

All the pictures in order. Sorry