Print workshop induction

I'm now a member of the print workshop at Cuckoo Farm Studios, Colchester.  Consequently, on Thursday I had my induction to use the workshop unsupervised in the future. Whilst there I took the opportunity to have a 2nd attempt at etching. I used one of my new etching needles, which is quite heavy and a dream to draw with into the hard ground. I redid the oak leaves I'd attempted to etch on my workshop, you can see those results here.

Learning points:

1. I need to clean the ink off the plates more, as you can see from the print above there is a lot of ink on the background.
2. I need to pay more attention to the composition. Despite it being an interesting subject (well I think so), as this print doesn't work due to the shape the leaves create... I could use a clean hard ground to work more into this plate, but I'm not sure that will improve a badly thought out compostion.

What printmaking lessons have you learnt?