Okay I'm going to be picky as hell with you because these are really good renditions as they are now. The only thing that I thought was weird was how Garmine (the green one?) keeps up her instrument. she doesn't have a particularly strong enough grip just holding onto the the Lyre's strings with her right hand so I feel her left hand should probably have to hold onto the spine of the harp, however that would mean covering up part of her bossom sadly. But great job invoking a personality into each character. I think Yrdina's (the blue?) eyes seem a bit too diagonal perhaps but that would be something to address only if you wanted to really render this character further as the angle actually kinda helps express the focus and action going to her midsection even if it does appear exaggerated. Also you tend to draw feet pretty small I think, though I interpret that as a stylization choice, but I just wanted to make sure you are actively aware of it. And personally I really like Miriel (red) her costume design is rendered nicely and overall I think it's a cool design, her personality judging by how you drew her probably would interest me the most. Nicely done, just wanted to give you some feedback, but it's really hard tbh.
No, I totally understand that's why I thought the size of the feet and hands might be just part of your style and that's totally cool! I agree in fact I see a lot of artists make petite feet to emphasis the bulk of the character and in turn it also creates a dynamic silhouette.
These are definitely good things to keep in mind... as for this picture there's not much I can do now about the harp and Yrdina's eyes (although I think you have a point with both). If it makes any sense, though, I'm sort of conscious of unconsciously drawing feet so small-- I sort of like how dainty they look, and it sort of draws attention to the bulkiness of the rest of the body. Same for hands; I tend to draw them a little smaller.
Thanks for all the feedback! I do appreciate constructive criticism.