How to make glass etching cream?

I want to know how to make white glass etching cream for frosting the glass. I have already bought the white powder (dudhi) and hydrofluoric acid and

DIY Etched Glass Tutorial

Make your etched glass really stand out with a pop of color using

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DIY Etched Glass Tutorial

Armour Etch Glass Etching Cream Kit - Create Permanently Etched

How to make glass etching cream?

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Shop Plaid FolkArt ® Glass Etching Cream™, 5.96 oz. - 49932E

Armour Etch Glass Etching Cream Instructions

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