Desk for a 9-year old

With all my recent prowess in woodworking my 9-yo daughter asked me to build a desk for her room. She drew something up, something simple with a shelf for her “phone and tablet”.
I complied and built a 18”x36”x30”desk, just the right size to fit at the end of her bed. I formed the legs using 2x4s and used my circular saw and my multi-tool to create an embedded 3/4x4 “design feature” to hold the shelf up. The top is 3/4” plywood that I had sitting around with wood filler and a lot of sanding (60 grit and 220 grit). Would have preferred a hardwood top but was shooting for $30 total materials cost. My wife and daughter have chosen a color and they will paint the desk tomorrow.