Welcome! If you're looking for mini-painting advice then you have come to the right place. Best thing to do is post up some WIP (or finished) pics in the WIP thread and ask for folks' opinions. The galleries are good for finished pieces, but don't expect much feedback there. The forums, otoh, will give you more opinions than you know what to do with
Btw, don't be overawed by some of the work in the galleries - there are plenty of pro painters here who have won many, many international painting contests. It took them years to get there, so don't feel you have to measure up immediately. There are also plenty of mere mortals who just do their best and muddle along slapping paint on plastic. Both groups of people will freely offer advice, to be heeded or ignored at yr leisure