How do I make a horn on Photoshop?

Question

I'm trying to put a horn (like a unicorn horn) on the head of a fish. I've managed to make one, but it doesn't look very realistic.

Also, I don't know how to (or even if I can) add extra fins to it.

Answer 1

the tricky part about what you're trying to do is the lighting. Even if you don't know your looking for it, the lighting being different on your horn and on the fish, will subconsciously register and make things seem wrong, even if everything seems technically correct. Sometimes using render lighting, you can change the lighting (usually you'll want to do the smaller object, in this case, the horn) to match the fish. Also color casts in photos (one of the 2 components being hueghed a bit off color) can make 2 things feel different and not matching.