I really like what you have in the room so far. Can you post a photo of the rest of the room? What's the wall from the foot of the bed/left to widow look like? Is the window centered on the wall and is that all the wider the window is?

Do you have a dresser or nightstand already? Looking again I see there's a table to the left of the bed. In my kids rooms I paid attention to where I thought the bed and dresser would fit best. I also tried to think of how the room may evolve in the years to come (desk).

I know you didn't ask this but I really like the yellow green color in the bedding and think it would look nice to repeat in maybe a painted night stand or a lamp. Possibly even artwork. If you don't have a nightstand yet I think it's nice if you can get one with drawers or baskets for extra storage. We've found that quite handy.

Please post photos and more info. if you can. :)

What is he crazy about? Dinosaurs or big trucks or Disney? At this age, you can put up inexpensive decals and not make a big investment, and then change it next year or so. I like the colors and bedspread.

I prefer the headboard against the wall better. Maybe move the table & chairs next to window, it looks too small where it is. You can move the bed away from the window if need more room.

What if you put the bed in the corner with the headboard against the wall with the door?

And I hear you. My DD's room has the same set up pretty much. Right now I have her bed against the window, but with the side of the bed along that wall, not the head. Like your current arrangement, only pushed against the window. She actually likes being able to peak out the window and still be in bed. I'll draw a sketch and show you, maybe it will help with ideas.

For me, I felt it was best to keep the middle of her room open for a play area.

Is there a dresser or anything else in there besides the bed and little table/chair?

If not, try arranging the bed similar to mine, move the table/chair to the wall next to the closet, and then have something in that lower right corner. I big chair, beanbag, tent, play mat, whatever he likes! That could be a big area for him to play in. How old is he? You could have a lego station, or a car track or anything really.