Hi guys. Greetings, i'm new here, as well as being new to airbrushing. Its my first time using an airbrush system. However i encountered some problems with the paint and thinner mix. I've attached some photos of the disaster i encountered. The airbrush im using is Sparmax DH-103 with AC300 compressor. Here's the first step i did, with 2:1(X20A thinner : XF acrylic paint) ratio. I did some testing on some scrap and it looked fine. However upon spraying onto the model it turns out like this. The white stuffs is actually tissue as i tried to wipe the excess paint off, huge mistake i done.

I test again on another scrap paper, turns out there are some spurts of paint coming off, which according to the shop i bought from, paint is too thick. So i thin it further, to 4:1. And it looked like this.

Just wondering, where have i gone wrong? It looked worse than i expected, its an utter disaster. Im completely clueless of what is happening as im a complete newbie to airbrushing. Im planning to use sandpaper later to remove some paint then respray primer hoping to recover the situation. I really need help guys. Many thanks in advance.