Why the texture having square edges

I have created 2 alpha brush and when i make a stroke on it. Its giving square shape edge around it. I want the alpha should have a feather or blur at corner so that square edge should not seen. Any suggestion

square%20brush

What sculpt brush are you using, the Clay Strips? That once actually comes out as a square shape compared to the normal Clay or Draw brush - so can you compare the alpha on that other sculpt brush? The behavior you say you want is the normal default behavior from my experience…

Im using the sculptDraw brush

I can’t reproduce here using the first image - can you post your settings for the texture brush and for the brush mapping as well as tell me if you are using dyntopo or multires, is it Anchored stroke, etc.