Here's an update on my daughter's room. It's still in the process, but coming together a bit more, finally!
Above her bed is some artwork that was DIY. I bought some cheap canvas and painted it. The fish I found at a local home decor store for 1 euro! I just used some spray adhesive to glue them to the canvas. I thought the symbolism of having a mama, papa and baby fish would be cute.

The stripes are quite perfect, but perfect isn't cool anyway :) I just painted some stripes on a blank canvas and then made the star in adobe illustrator. I then printed the star on heavy cardstock and glued it to the canvas.

This artwork was semi DIY. I bought the cute sea animal graphics and backgrounds from Mygrafico.com. Love that site btw! Very cheap and cute graphics. I assembled the images in Illustrator, though you could possibly do this in paint too. Then printed on cardstock.

The pillow I photoshopped in to see how it would look. I love it! Found it on Etsy from NamlyPillows.
Almost done with her room. Still need to figure out the bedding and a few more decor items. What do you guys think??