Nice image! I just think shadows (for girl and for bird bath) are missing.

Nice atmosphere

You need to find some better tutorials for the rain, or experiment until it get's right.
Check the works of ponti55 and fatz8016.
And if it's sunny raining, add shadows, if it's cloudy adjust the mood.

Umbrellas usually are held in the direction the rain is falling...Maybe reverse the rain so the umbrella is doing some good?

very nice mood author...love the moving further idea...best of luck

Horse is a little too sharp in comparison to the rest of the image, and you may want to take the cut a little closer as there seems to be edges.. best of luck

As horse is under tree shadows, I think you can darken it a little more the highlighted parts.

thanks for the help, but I actually started with the horse directly on the trail and I didn't like the darkness, so I moved him to the edge of the fence (which has light on top) his back has a continuation of that light and casts his own shadow, that's the way I see it, (I moved the horse purposely out from under the trees so he would have a light (he looks rather dull without light)

thanks for the help

Love it...simple but very effective...well done author

He looks STOOOOOOOONED

I think you have some resolution issues. The can is clear and the bum is very OOF. I am guessing this was the best homeless guy stock you could find?

jawshoewhah you are sooooooo right! I kew it was a poor photo, blurred it a bit but no great improvement! It just fitted so well. And Toothpick134, living like that I think I'd be stoned too!

Poor guy

Try sharping the beggar's image with the Sharp Mask tool, it may help a bit.

Or, if the beggar image was too small when you pasted it into the bench image, make the bench image smaller.

Just a couple suggestions

Dude, wouldn't the guy in step 2 blend better on the bench ( if flipped?) and maybe some bench adjustment too ? You might have to recreate the bench for him..
If not tempted, here's my crazy idea, you can dress a friend of yours into a beggar take him a pic that would fit the source and blend in. Carefull with the light source Yeah I know, I already said it's crazy :p

Agree with Greymval. You still have time, although it looks like your alternate source would work well if you if you worked with the perspective a bit.

Thanks for the comments.