Just wanted to let you know that yesterday Frankentoon released a new brush pack for Affinity Designer called Texturizer Pro. It's a collection of more than 50 texture brushes for being used in Pixel Persona.
The brushes can be mixed together to reproduce a (super) wide range of real-life textures, from very subtle noisy ones to more extreme/destroyed surfaces. You can create super complex and organic looking results super fast and very easily. Here's an