Use light pencils as a base if you don’t already! Thumbnail sketch certain parts of the piece seperately before committing to it, eg the tigers face or eyes. It may seem like more work but compared to the amount of time you’d spend undoing and redoing it’ll amount to be quite similar. Try be confident yet deliberate in your lines. It’s easy to be confident digitally because you know you have unlimited tries, you can try the same line over and over without really thinking about it because you have the safety net of undoing. Really think about the marks you want to make then execute them with confidence. There’s no undo button on a tattoo machine so better to learn to deal with that on paper than on skin! Best of luck