Hey. For your first escape game, It looks pretty good.
Let's start with graphics. I liked the idea of having actual pictures for the background; if this is used correctly, it can make the game much more immersive. If you took these pictures yourself (or even if you found them online, it doesn't really make that much of a difference), using real-life objects instead of drawn-and-placed ones would make the game look much more professional. Fitting images can be found all over the internet and if you're decent at cropping it shouldn't be too difficult to place them into the background. However, these objects have to be placed slightly more obviously as to not confuse the player what to click; spam clicking everywhere only gets you so far and ragequitting will soon follow along with a rating of zero.
Now onto the gameplay and the user interface. Though this game is very short and simple, the 'controls' are not explained whatsoever. The (for lack of a better word) hitboxes for the items are not clear at all and confusing to exit. It took me around fifteen seconds to figure out how to close it, which by that point most of your possible players would have ragequit. Have a simple tutorial before getting into the game itself. It doesn't have to be much, but have at least enough content to make it blatantly clear to the player what has to be done to play the game By content, I mean a text followed by a demo room, or something along the lines of that. Currently, it is confusing to players that are not experienced in escape games. When exploring the maps, have the sides highlight when moused over or have a silhouette like the inventory bar indicating that there is an area in that direction to be explored. It's important to think like the player; even have a friend play it before you before you upload. It's something simple that can help the game entirely, seeing it from a different point of view. There is a bug (I'm guessing) in most of the rooms where a seemingly-clickable button is in most of the rooms near the top-right corner. It doesn't do anything, but it makes you think there's something to be done there. As for the ending, the little boy was confusingly placed and there was no treasure mentioned other than a buried hammer - which was much too difficult to find.
That pretty much sums it up. The graphics were interesting, but drawn images rarely fit in real-life backgrounds - use real objects, and place them in areas that aren't ridiculously difficult to find. The interface was very confusing at first, so implement a tutorial in your future games (which I presume you will do) clearly explaining the game mechanics; also try to make a way to indicate other areas that can be explored to avoid confusion.
Graphics: 7/10 - Interesting scenes, but non-fitting item graphics -
User Interface: 4/10 - Very confusing at start and hinders gameplay, but functioning -
Gameplay: 5/10 - No tutorial, random clicking required, confusing ending, but logical puzzles -
Overall: 6/10
Feel free to pm me. I'd be glad to help with ideas, and your game shows much potential for your first attempt. Good luck! :)