To say you've only been full time for just less than a year you're doing well. Regarding needle groupings ,I look at it this way, if you walk into an artists' studio ,how many different brushes do you see in how many jars? I use a multitude of needle groupings and they all have their specific use. I use quite a lot of RSs on various jobs especially something like coloring all the individual scales on a dragon or koi, if you used magnums to do things like that you'll send yourself nuts, then I'll probably drop onto a magnum for bigger areas, but then again I've also had great results with big rounds. You have to try to master everything, I've been in this game since 78 ,recently I overheard someone say "that twat could tattoo with a six inch nail" I'm not gonna claim that, but will accept the compliment.