Is this okay? (Vallejo white surface primer) : r/minipainting

Vallejo White Primer Acrylic Polyurethane, 60ml : Arts, Crafts & Sewing

Vallejo Surface Primer: White (200ml) - VAL-74600 — Empire of Minis

Vallejo Surface Primer for Miniatures (Review and Tips) - Tangible Day

Can anyone help me with a priming issue please? : r/minipainting

VAL73606 Vallejo Surface Primer - German Green Brown 60ml - Sprue Brothers Models LLC

Vallejo White Primer Acrylic Polyurethane, 60ml : Arts, Crafts & Sewing

What Primer Should You Choose? - Mini Painting 101

Vallejo Surface Primer for Miniatures (Review and Tips) - Tangible Day

Vallejo Surface Primer for Miniatures (Review and Tips) - Tangible Day

Vallejo Surface Primer for Miniatures (Review and Tips) - Tangible Day

I'm new to priming with an airbrush, when I use Vallejo black primer it applies perfectly and smoothly, but when I add grey as a zenithal, it becomes very patchy. Anyone know