Question about custom sprites

[Melasauce]

Hello, I'm just getting into DOOM modding and I wanted to make custom sprites for Zombieman. Let's say that you have higher quality drawings like the one that's attached to this post. Is it possible to have it like that in game (in decent quality)? As I said, I'm completely new to this and I didn't really find any tutorial related to this.

[Bauul]

Depending on the source port, yes. You can replace the sprites in any source port, but the default resolution is fixed, so the size in game is dependent on the resolution of the sprite.

 

Modern source ports (such as the ZDoom family, probably others too) allow you to scale the sprite down in game, so you can add in higher resolution images. In ZDoom ports, this can be defined in the sprite's Decorate file. 

[EarthQuake]

You should also read up on the sprite naming convention as well. It can be a bit confusing to those new to editing wads.