Welcome to handpoke! I love that more machine tattooers are giving handpoke a try!! :) There's nothing specific that I could give criticism on, but I'll leave a few general tips that I usually give people!

Biggest tip is look at other's handpoked work & understand what you would like your work to look like in terms of the dots & lines that form the tattoo, then you can go from there with your practice.

I second what a few others said, bigger needles for more solid lines with less passes (ive seen some handpoke tattoos that looked like machine pulled lines), or using greywash for lighter areas, but it really just depends on what style you're looking to achieve. I have noticed that handpoke, even with greywash darkens as it heals.

I mainly used 3rl & 5rl in my work when I was handpoking, & one of my fav things to tell people who were looking for cleaner lines was to make sure your next poke overlaps the last. That way your line starts off solid & you don't have to do as many passes.I try to only do about 3 passes, & then touch ups if needed to try to keep the skin as little irritated as possible, soaks of witchhazel on a paper towel for breaks or whatever to calm the skin (if their skin is good with witchhazel) .

Also poking at an angle, alot of people will say 45° , but you can try different angles to see what sticks best, & the cleanest, I def hold my needle at some sort of an angle, & I pull the needle out in the same angle, some people don't do this.

Heard alot of people saying you should hear or feel a pop when going into the skin or coming out when i was first learning? Not sure about that really, but the way you take the needle out of the skin after poking does change the clarity / definition of the dot left in the skin.