Arrows are very useful when working with wireframes or flowcharts but there are no native arrow capabilities in Sketch. The good news is that it’s pretty easy to create one.
Now that’s a beautiful one, here’s what we need to do to make it resizable:
Put all your layers in a folder
Select the arrowhead layers
On the right side in the inspector there is a “Resizing” dropdown
Select “Pin to corner”
And we’re done. This is a very simple arrow but the possibilities are limitless. Hope this was helpful and happy Sketching!