painting the inside without an airbrush

I need a lot of help. I painted my catalina inside and when it dried up it left some markes.
How can I fix this?
Why is this happening?
Paul

Can you give us more details or preferably some pics of the marks.

just on a guess your paint was too thick… it dried before it could level out… try dipping your brush in thinner next time, wipe the excess off then put the paint on it… or if you ALWAYS brush it on, thin the bottle of paint down a bit… it might take several coats to cover it that way but there will be less chance of it leaving brush marks…

But like MM said, if you could give us some details like what brand of paint, and better yet, pics of the inside it would help us narrow it down even more!