When I first started building it seemed crazy hard to get the flavor I wanted. I had to just try different things until I found MY happy place. Sometimes its not just the build, sometimes its dependent upon placement of the coil itself, a one or two mm difference in placement can often make a huge difference in flavor. Sometimes its the wicking your using.. for some reason some builds take better to some wicking than others.
Its just a matter of playing around. Get in that kitchen (or wherever you build coils, I do it at my kitchen table) and start building. Buy many types of wire.. Try different placements of the coil, try different RDA's, and lastly try different build, at different ohms levels. Sometimes just the smallest differences make a huge difference to your pallet.
In the end, its a learning process. Its not something you will get overnight, and hands on is the absolute best way to learn. If you have all your coil building materials and tools, as well as a solid ohms reader, all you need now is trial and error. Watch some Youtube videos and try try try again.
Most people (or at least me.. lol) don't get this in a day on build one.. it takes time and practice. In the long run, your supposed to have fun with it. If its not fun then put it down for a while and go back to it in a bit when your not frustrated.