FZMM

Head Generator

From this GUI, you can add textures to heads or modify them with 'models', and you can obtain the head in-game, visible to everyone (or you can also save the modified skin)

Head generator (overlay)

Some 'models' have parameters that allow you to do things like: change the color, adjust the height (for glasses, for example), or combine with another skin

Head generator model examples

Head generator texture examples

Operator utilities

Several items are added to operator utilities, and it can be accessed without OP (requires enabling the operator utilities tab from vanilla)

Banner editor

A simple GUI for creating and editing banners with ease

Banner editor (shield)

It also allows you to modify shields

Head gallery

Access to the large heads collection of Minecraft-heads

Text format item example

Player statues examples

Each of these 'Statues' is made up of 26 armor stands, each holding a head in its hand, and as you can see, it supports 128*128 skins