How to blend paint strokes

[Swampy Pete]

I'm relatively new to digital painting and Affinity Photo and am probably not researching or stating the problem correctly, but here it goes.  

After painting a brush stroke in Affinity Photo, how do I blend or blur it.  Such as when someone shadows with a pencil and they use their finger to blend or blur it and fade it out.  Or when one has painted two colors with oil paints and then uses a dry brush to blend, blur or fade the colors together.  

Thanks

Swampy Pete

[firstdefence]

You can use the Blur Brush Tool, or the Smudge BrushTool.

Created using the smudge brush tool and a painting type brush

[Swampy Pete]

Thanks, didn't realize you also choose a painting brush with those selections.

[firstdefence]

44 minutes ago, Swampy Pete said:

Thanks, didn't realize you also choose a painting brush with those selections.

Yes, you can use any brush you want and you can make your own or import abr brushes and afbrushes files. We have a resources forum that people upload to check it out: https://forum.affinity.serif.com/index.php?/forum/11-resources/