I like it! I always find myself interested in an artwork that somehow edits an old photo, can't tell ya why Your work looks cool and painterly, I dig that style.
There are some things, howewer, that I'd like to adress here, some suggestions that I think you may benefit from.
First thing I'd like to say is that you should study values a bit more carefully here. If ya look at the photo, the value range is quite huge. You've got VERY dark leaves and bushes on the right, very light clothes and sky and fence that clearly stand out in comparison to the ground behind them...I don't really see that in your painting. There are no strong lights and no strong darks, which kinda makes it slightly dull in terms of value. Having more contrast would definitely help.
If you struggle with observing value, try color picking. See how light is the lightest light, how dark are the darkest elements, take notes, apply that to the painting. That's a really good way to use reference, you know?
Next thing - story.
I am not the master when it comes to telling stories with paintings ( yet! Just sit back and watch ), but I have learned that the story is actually one of the most, if not the most, important parts of an illustration. All the decisions you make during painting should benefit the story.
So what is the story here and how can we enchance it?
Some kids are looking at an object in the distance. Story is present, I am also a bit hooked. What it is that they're looking at, I ask myself. Is that their parent coming home from a voyage? Or is he going away and they look at that? You made me ask questions with that painting, so you're on the right track. How do you enchance it though?
Well, look at refference. Bigger fence could be a key here! The kids in the photo seem so small and vulnerable, becase the fance that they stand on is so big in comparison to them. The fact that the fence that they climb on is so much bigger than they are adds so much to the story, it's quite a shame that it went unused
I am not telling you that you did something wrong here, you;ve got a story and it's nice What I am getting at is that by thinking about the ways to enchance a story that you've came up with can add a lot to your work.
If your story is that someone dies and you draw someone laying on the ground, how do you push that further? Paint some blood and your message is clearer. If the story is about a small guy facing a bigger guy, push the contrast between them! Make the big guy extra bulky and the small guy extra small. Exaggerate that!
If the story is about bunch of kids climbing on a fence? You get the idea by now, don't you?
Do I make sense here? I hope I do!
Last but not least, watch the perspective. The fence seems kinda flat. The horizon line is quite high. The lower you go from it, the more of the top plane of those planks should be revealed. Can't see it present here, which is a shame.
That would be all I got to say! Hope it didn't came off too negative Looking forward for your next illustrations!