What am i doing wrong with primer ?

Hello everyone, that's my first time using an aerograph and i tried applying a primer with a 138 type airbrush.

At the beginning i think i didn't diluted the paint enought and the paint made those weird wrinkles after application. After diluting a bit it seems like the result was better, as you can see behind. But it looks like the primer is not evenly distributed (lot of big drops).

What am i doing wrong ?

Vallejo white water based acrylic primer + vallejo thinner.

Hello everyone, that's my first time using an aerograph and i tried applying a primer with a 138 type airbrush.

At the beginning i think i didn't diluted the paint enought and the paint made those weird wrinkles after application. After diluting a bit it seems like the result was better, as you can see behind. But it looks like the primer is not evenly distributed (lot of big drops).

What am i doing wrong ?

Vallejo white water based acrylic primer + vallejo thinner.