[Fine liner brushes]

Hey guys, does anyone know how can i get the fine liner brushes by Artifex forge. I bought the iPad version of affinity designer and y cannot find a way to activate the app on mi affinity account in order to get those brushes.

anyone that can help? 

[Purchased Apps on Appstore for Mac but did not receive the Free Bundles from Affinity's Webstore]

How did you get them? I cannot download the brushes pack :c

[Fill layers to dodge and burn]

Hey guys, I saw a technique to dodge and burn but it wasn’t with curves. This guy used a 50% gray fill layer and then used an overlay blend mode next thing was to paint with the  paint brush in white to burn and black to dodge but I don’t achieve to paint on the fill layer. I tried what I just told you but it does nothing.

Hopefully some of you guys have tried this technique and can answer what is happening. 
 

Here is where I saw this: https://affinityspotlight.com/article/drue-photo-shares-his-secrets-to-beautiful-light/