Welcome to modeling, and the board(s). You've come to the right place for tips, techniques, etc.
As a modeler, you are going to be your own worst critic, so don't get frustrated at your results. Take what you have learned, and apply it to your next project. Better yet, feel free to share what you have learned on here. Afterall, that's what these forums are all about; sharing ideas.
Again - welcome to modeling!!