How to decorate a shared room between girl and boy?

Some very cute ideas (and practical too):

http://www.woohome.com/interiors/21-brilliant-ideas-for-boy-and-girl-shared-bedroom

26 fun ideas: http://decoholic.org/2013/09/10/best-girl-boy-shared-bedroom-design-ideas/

Basics: https://www.hunker.com/13412076/how-to-decorate-a-room-for-a-boy-and-a-girl

I decorated with a very mild beach theme. Nothing overdone. I had a white waffle shower curtain and a frame that had beach inspired finger paintings by my kiddos and then a frame with seashells and a white wooden cabinet over the toilet. It worked really well with my boys and girl bathroom

Depending on size of room you could put a divider between halves and decorate to each child's taste.

No room for a divider i have seen where they divide the room just with paint. His pallet on one side and hers on the other.

Depending on age or interests I would consider a castle theme could use dragons and princesses. Or if young Paw Patrol I think is gender neutral. Deviding the space while nice might make the room appear smaller. And could cause arguments. About the your on my side variety.

If you can put up 2x4s and paneling for your wall or divider, if can not, you will have to use wire attached to each wall to devide the space and hang painters tarps. Then decorated his room with two bed spreads one for the bed one for the window. On her side crib skirt with matching window curtains. Long time ago but rooms looked very finished.