Not bad, not bad. The only crit I have is her hands look a little flat... hands are super hard, I know, I can't tell you how many of my own drawings just... stop at the hands cuz I couldn't get it right LOL. But just practice a little more.
Also, I think the viewer should be able to see her other foot from this angle. Everything else is nice, your lines are clear, coloring is crisp (especially for markers!) and I like the texturing on her tail.
But most importantly, keep practicing to get where you want to be!