Take baby steps. If you are having a little wrinkle, try holding the dark side up instead of being flat on the table. Press the light side and slide into the dark side. This should prevent that little wrinkle. A heavier iron does a lot of the work for you. But, if too heavy for you, it can cause more problems than it is worth. I have a heavier one for larger projects and one of the very small light one on a 12" pressing mat. While I have larger ironing boards, I prefer my 20" x 15" teflon covered slightly padded board that sits on a wooden tv tray table to the right of my machine when I am sewing. It is perfect when making blocks and is portable. My point is that whatever works for you will be what you should do. Try small things to start and keep upgrading and changing until you are happy with your results, but don't throw out everything you currently do at once.