Am i doing this right?

well i prefer light coats built up over about 2 or 3 coats and also you may be stopping your airbrush in the middle and have more paint in some areas also if you dont filter your paint (i use panty hose) blockage might be part of the problem, could you post a pic?

Multiple thin coats is always better than one thick coat.

Always start spraying "before" the subject and spray past before stopping the paint flow. For something like a wing, spray along the direction of the airflow (ie. across the wing, from  front to back) rather than along it.

The unevenness may also be a result of the pigment settling in your airbrush jar/cup while you're working. I don't use MM acryls, but Tamiya's OD is made up of several pigments, a dense brown pigment which settles quite quickly and a less dense green which is finer and settles more slowly. If you are painting for an extended period of time, it may be worthwhile stopping and re-mixing the paint.

Some unevenness may not be a bad thing, especially if you are going to weather your model.

I use several coats to obtain the proper coverage.  Contrary to what Phil_H posted about spraying one way, I spray one way and the next coat is sprayed 90 degrees opposit of the first coat.  That way you will get a more even paint job.  I picked up that technique from a couple of Airbrush books I have.

thx guys!

 

ya i've been trying to get my digi camera working but it's having problems. I dont know how to describe it...gonna take the camera to my friend see if i can get it working later. I'm pretty sure its not an airbrush flow problem because when i paint something it comes out fine and nice, not runny and adheres great. I believe its my problem of 1 coat and we are done sydrome. I'll  try to post some pics later