I've been working on your Malaguena lesson -- sporadically. I'm more focused on e-guitar but through looking at a few lessons like yours I've gotten drawn into pulling out a classical guitar I hadn't touched in many years (and could never play very well). This lesson is great because it practices two techniques that cause me a lot of difficulty: rest stroke and tremolo.
I'm aware of a few problems in the video below, most particularly I can't yet play tremolo evenly up to speed (I usually practice it slower), and the tempo wanders too much. Other than that, I wonder if you could take a look at my right hand technique and give me some feedback. I have trouble getting a clean slight-nail attack. Maybe I just need lots more practice. My nails are weak and I just can't grow them very long, so I have to use mostly skin contact on the strings -- I think. And when I try to get nail contact, I often hook the string. I was just looking again at your video and realized that you have a more direct attack: the nail appears nearly parallel to the string, while I've been using a more diagonal attack. In this video I'm intentionally trying to imitate you more.
Anyway, I'm having fun with your lesson and any tips would be very welcome.