notes for Selection tools in affinity photo:
select trees or hair
use selection brush tool (w) to make a basic selection then click refine button use ] to increase cursor size, then click on areas to let the tool refine the selection click on foreground/background to add/remove more parts
straight line lasso tool
press L, then hold shift and click to get straight lines
flood select tool (magic wand)
draw to include surrounding areas uncheck continuous to include whole image
edit selections
(make a selection) press q to enter quick mask mode then press v to go into edit mode