Yokky
I remember the second picture, I've already seen it in the past, nice work! Lisa's feathers have so much details and they are adorably dishevelled that thing alone would make me like your coloring, but it has more than that... good job with Marge's hair and the textures are also well-done. Nice to see that sketch in color.

But the first picture... oh wow I love it! It's magic, charming... I have no words. Lisa's hair is awesome, and the forest and the sky are so detailed and harmonious. Unusual, and very impressive method. I definitely would like to see more pictures of this coloring style. You have talent, keep it up!

Yokky
I like so much the second one! You've done it all so well, especially feathers - they are brilliant!  And all textures, and weeping mirror - excellent details!

What about first one - awesome work with the hair, but whole picture just doesn't suit my taste, I suppose: strange "furry" dress lines and also folds forming kinda sad smiley on her back - what does that mean? For me it looks like you've tried so hard at picture's detailed top (agree with others, very impressive), and then become tired and not so devoted at bottom part. But, it seems that you have talent not only in music, so keep it up

Aiii, thanx, really, glad. =) Brakusaetsya, funny, but the top of the picture was he latest thing I did, and I thought if the bottom had been brighter or more detailed it would have diverted from Lisa :+)

That colouring of Gustavo's sketch is fantastic.   It's a really unusual and distinctive style, as GH said, it's got the feel of a pastel piece but it also seems to have a sort of "inner glow" in places.   The contrast between the bright lines and the dark background is really atmospheric.   That's what I like about this fanart thing, you'd think that people would run out of original ideas, but it never seems to happen!