I certainly agree with you regarding ”a lot of practice”. As you would say in Spanish: ‘mucha, mucha, mucha práctica, y luego. más práctica’.

Regarding practicing with closed eyes – if it helps you to Deep Process what you are doing, if it helps you to concentrate, do it. I often like to practice in total darkness – something which seems to surprise people. Especially those who turn the lights on trying to be helpful!

I have no idea what I am doing really since I am a beginner, but this has given me great motivation to start practicing something that I also feel is beyond my brain’s ability to grasp.

I have been practicing using the simple principles indicated by the words ‘ascending’ and ‘descending’.

I have broken my arpeggios into ‘thumb plays 1 string’ and ‘thumb plays 2 strings’. This is probably oversimplified for guitar since I play uke.

I assign my fingers to specific strings. I then play arpeggios with only specific strings/fingers.

Rather than having a specific musical goal with the arpeggios though, I am merely practicing the patterns of finger movement. Trying to build proficiency with thinking about two separate groups (thumb and fingers) at the same time. I simply repeat again and again without change. Then when I get more confident, I add an alternating pattern with two or more different types. This is perhaps a bit different than a method that involves learning a long sequence of arpeggio which includes changes. As you said before, breaking it down into smaller bites.

Rather than practicing an arpeggio which varies, I think of them as specific types of arpeggios with a length of 1 bar or two bars and repeat. As you have said, an arpeggio, like anything else, must fit the compas, so if it doesn’t fit, I change it or ignore it.

The more I do it, the more I get the feeling that it is going to take me a LOT of practice to get it right! heh.

I practice with my eyes closed 90% of the time and find that it can help a lot. Do you?