Hello! I have not personally coloured any Berserk pages myself, but I have always meant to. Personally, I love the earthy tones that you chose here, as it fits the style of Miura's work very well.
The deep browns on the skin, and purples in the background are lovely. (The subtle colour on Casca's lips, and in Guts' eye [on the closeup] are really well done.) My only suggestion for you would be to really make Puck's glow a bit more noticeable on Guts' face. If you're going to add a secondary highlight from such a small/bright source as Puck, then I would really emphasize the "brightness" in his glow, since you coloured him so brightly I'd expect his cast on Guts' face to be bright as well. (If that makes any sense at all?)
Outside of that one comment, this is very well done! Keep up the good work, and keep posting it on here! I look forward to seeing more!!