At this age you should just ask for favorite colors, and then you pick the complimentary covers. Real privacy demand won't happen until about 11 - 13, so right now just concentrate on making it beautiful. If it is pretty and functional, they will love it! Buy furniture pairs so when you do split them up they each have basics. Advice about dividing the room generally is good, but you don't want big sister declaring any territory! There is a crown detail you can do over a bed that includes curtains down on either side - can provide privacy when you sit up in your own bed - consider this as they get a little older and won't pull it down while hijinxing. If it is beautiful and the textiles are in a color they love (or two colors that work together, like pink and lavender on a spring green or taupe wall &/or turquoise and spring green on a buttercream yellow wall ) - then they will see that they can also be different people who are harmonious together. At 7, she is old enough to pick a great color, but don't ask the 5 year old - her taste is changing daily - just surprise her with something all her own that works with sister's pick. I like the look when people select soft goods that match except for color and find one great print accent pillow that ties colors together for both beds. Stay with neutrals on furniture - you can paint out different stuff so it is tied together with pale gray paint. Think mostly about function - Add shelves and cubbies that hold baskets for stuff - stuff changes but they always have it. If you have room, give them each a desk as they approach 5th grade.

I could see a set of three pictures with white or silver frames and anything really that just incorporates your room's color. Make sure they are large enough to fill most of the width. You may also want to add more pillows and large shams type pillows for a more interesting and complete look. Your lamps are a bit too small (see lamps' proportions in pictures). Hope this helps.

How about flanking the window will billy bookcases? Paint over the green wall an off white and just pick a color you love for the bed wall. A stylish chair for your desk and maybe "industrial" looking bedside lamps will "man" it up. :) Plus, get a cooler looking desk chair...in a color that you paint the bed wall.

Work with teen for the grand plan! Put in this website search box: teen... Look at teen magazines at the library for cool ideas. Think about colors, shapes, patterns. Your creativity has no barriers! Use two color combos that are easy to mix and match. Paint walls, furniture, etc. Think outside the box. Paint a desk two different colors - one on the frame and the other on the drawers. Paint an all over pattern on a tall skinny section of a wall. If you don't want to commit to paint yet, see what it'll look like with dollar store wrapping paper taped to wall. Make pretend wallpaper with paint and a stencil. "Shop" in your house before you go out. Sometimes we have stuff in one room (or basement/attic) that can be used in another. Look for fun, kitschy, or unique items, for visual interest, and for conversation pieces Go to garage sales and thrift stores for big picture books. Use for prints for wall art. Get frames there also, or at dollar store. Get dollar store wrapping paper that is really pretty, interesting, or geometric. Frame it for wall art. Look for bulletin boards at garage sales. Paint frame and use dollar store wrapping paper for cork part. Attach with rubber cement or similar glue. Look for throw at garage sales or thrift store in bright color. Fold long way and put at end of bed. Build a wish list and take it with you when you go out.