Thanks Bea. That pinky is always the weakest finger and it needs the most practice. At first it seems impossible, but with time it will become stronger. To have good trills you need to practice your legatos or slurs/hammers/pull-offs. There are good exercises in this D03 class for that, and there are many others. It is tough on the hand, but you have to practice this every day. It is kind of like weight training. In fact there's a great book on hand development by Scott Tennant called Pumping Nylon. I highly recommend it. I also found these slur exercises called "power slurs" http://www.************/slurs.html
Meanwhile, work the slur exercises form Delcamp into your weekly routine. I do the power slur exercises three days a week and rest in between and on weekends (this is critical, rest in between). They are brutal at first but improvement is rapid. Once you can do a powerful, clear, rapid hammers and pull-offs, trills and ornaments will be more powerful, guaranteed.
I'm not sure I'd say mordants and trills were opposites exactly. Trills have three notes, thus the name. I think mordants have four, but I think that can vary and mordants can have many more notes played rapidly. This is not an authoritative answer, just my observation. I defer to someone more schooled in music theory. There is also a link from Marko in a previous post I made earlier on ornamentation. I'll find it and repost it here.
Happy slurs. Don't slur your words!
All this time I thought I was making music; it was making me.
2015 Steve Ganz "Solidarity"
1980 Dauphin D30
1962 Fender pre-CBS P-Bass
National Triolian Uke ca.1930
Almost as many fly rods as guitars