Now I've remembered that it was "Nowa Fantastyka", to be precise - I'm pretty sure this is the issue in which I saw that painting - I remember this cover (which is also Siudmak's work):
a.allegroimg.com/original/03f994/ad01ff834c41b38ff1a4ee136112/Miesiecznik-Nowa-Fantastyka-9-93
I also remember this one, "Podwójne oblicze duszy", from that issue, I think:
black and white drawings.
Even those pencil drawings show that he's a perfectionist - they're so detailed and refined :)
I still have it in my archives, looks extremely infantile. :):)
In the beginning copying is a good way to learn drawing/painting :) That's great that you kept it, btw :)) I don't have any drawings left from my childhood or early teen years - I guess everything was thrown away. There's only one notebook left from when I was a younger teen - I used to draw in it during summer holidays at my grandma's in the countryside. But my cousins took it without telling me about it and now it resides in Wrocław ;P
Now when I look through old issues
You still have them? That's cool... I don't remember what happened to our issues (and I think we had only two in total).
Btw, pawian, you revived my Siudmak nostalgia ;D I feel like copying his works again after so many years lol