Not bad. The composition could use improvement, it looks like you had several things you wanted to include in the picture, and not enough room to do so. The moon looks too big (unless in the Half-Life universe the Moon has moved closer to the Earth for some reason), and the differences in detail and sharpness make it obvious this has been photoshopped together. Some transitions between different sources are well blended, and others are rather sharp. Not very good color balance. Good sense of scale, except for the moon. Lighting could use improvement.
All in all, better than what I can do with Photoshop and Google, but not as good as it could be.
I like how you included some of the images you used to put the picture together.
Not bad. The composition could use improvement, it looks like you had several things you wanted to include in the picture, and not enough room to do so. The moon looks too big (unless in the Half-Life universe the Moon has moved closer to the Earth for some reason), and the differences in detail and sharpness make it obvious this has been photoshopped together. Some transitions between different sources are well blended, and others are rather sharp. Not very good color balance. Good sense of scale, except for the moon. Lighting could use improvement.
All in all, better than what I can do with Photoshop and Google, but not as good as it could be.
I like how you included some of the images you used to put the picture together.