If you want a non shiney look I recomend testors Dull Coat. For a shiney look same brand but gloss coat.
One trick to use with anyting you spray from a can is to heat it up in
"Warm" water. This will allow the paint to flow more evenly over the model and reduce the risk of "orange peel"(bumbs through the paint that look similar to the skin of a orange). Do not use a hair dryer or extremly hot water as this could easily cause the can to explode, if you can put your hand in the water then it's fine.
A clear coat will also remove brush marks (assuming the paint is applied correctly leaving no raised paint lines) leaving a close to air brush finish.
This is a photo of a model i hand painted and applied testors dullcoat to.
Mongol General: Conan, What is best in life?
Conan: To crush your enemies, see them driven befor you, and hear the lamentations of the woman!