A great looking sprite! To address some of your questions:
- His left hand seems to have a "floating" finger.
- I don't play guitar, but shouldn't his right hand be closed, with thumb and index finger extended to stroke the strings? Or is he plucking at them? I don't know, I could be totally off.
- I think his left upper arm is too short, especially if you compare it with his other upper arm. I think his elbow should come down almost to his lap, with his lower arm angling back up to the guitar.
I just found this with some pictures of holding a guitar. Might be useful as a reference.
- His left hand seems to have a "floating" finger.
- I don't play guitar, but shouldn't his right hand be closed, with thumb and index finger extended to stroke the strings? Or is he plucking at them? I don't know, I could be totally off.
- I think his left upper arm is too short, especially if you compare it with his other upper arm. I think his elbow should come down almost to his lap, with his lower arm angling back up to the guitar.
I just found this with some pictures of holding a guitar. Might be useful as a reference.