I have an airbrush and am trying to learn how to use it. I did some practise and it came out ok but not brilliant. I used egg yellow colour and I noticed that whilst there was fine spray there also seemed to be some tiny blobs of colour throughout - the blobs were dark almost reddish (how the egg yellow looks in the bottle). Is there something I am doing wrong? 
This is only the second time I haved tried to use it so it shouldn't be worn out or anything. Can anyone please help me with some words of wisdom?
I have been told that vodka makes it dry faster/better. I used liquid colour the bottle does not say specifically for airbrush but I got them the same time as I bought the machine as they told me at the shop that that was what they used themselves and I have read in a book that other liquid colours could be used. I do have some other colours that say specifically airbrush on the bottle maybe I should try them to see if there is any difference in how it comes out...
Get colours that are specifically made for airbrush work. Remember, the people who sold you the airbrush are professionals, and you are just learning. Make everything as easy as possible for yourself.
Does your airbrush have variable pressure? Is your needle in place properly? And does your airbrush have the jar on the bottom or the cup on the top? These factors will all come into play when you go to use it.
Theresa 
Thanks I will give it another go with the Airbrush specific colour and see what happens. I have like a button thing on the top that affects the spray is that what controls the pressure or are you talking about the actual compressor part of the machine I have a cup and a bottle, I used the cup on this occasion.
I meant variable pressure on the compressor.
Continue using the cup. I do not get to airbrush cakes very often, but when I learned the technique, the instructor taught us that the gravity-feed (cup on top of the wand) type of airbrush is better for cake decorating, as you get a more consistent mix of air and colour.
Theresa
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