CABINET

I'm not really great at drawing classic tabbies myself, but I'll try to give a bit of advice

Firstly: use references! When drawing anything you're not used to drawing, references are a great resource!

Classic tabbies have sort of swirly stripes, often creating a sort of "bullseye" pattern

As I've said before, I'm not very good at giving advice, so I'm just going to put a very rough example of what I sort of mean

Don't take this example as law. I stylize my drawings quite a lot. Looking at actual pictures of whatever you want to draw (classic tabbies in this case) is much better!

Hope this was at least a little helpful...