So press pause on Tetris, and get out your sewing machine, because it's time to build this thing!
Step 1: Materials
A key part of this dress is how stretchy it is. Be sure to get fabric that's got some give to it, so your dress will fit snuggly.
Step 2: Prepare the Dress
I'm 5' 10", and so after accounting for the black borders and hemming, cut my dress to be 37" long, and this can obviously be toyed around with for your own.
After you have cut out this rectangle of gray, pin in a small hem and set aside. No sewing quite yet.
Step 3: Borders
Fold fabric in half length-wise, and pin along the edge. At this point I took out my iron to get those creases in at the fold.
Using a strong setting for stretchy fabrics (see my picture of the sewing machine) sew this pinned strip right along the open edge. No need to be too worried about super straight lines - this seam will be hidden after sewing it to the dress itself.
Once your borders are all set, pin them to the top and bottom of your gray fabric. There should be some overlap between the pinned hem for the gray and the black borders' seam. Using the same stretchy setting on your sewing machine, stitch the two pieces together. Repeat on the other side.
Step 4: Sew Dress Together
Using those same stretchy settings, stitch along this line.
Fold right-side out, and you're dress is all set! Try it on and see how it looks - fit, trim, and re-sew some parts, accordingly.
**A bit of advice: after your dress is properly fitted, take a look in the mirror with it on, and use that chalk to mark out where you want your screen and buttons (and also mark where you do not want your buttons, if you catch my drift). This'll be helpful to reference later.
Step 5: Make the Screen
Using your measurements, cut out a small square of the "screen" fabric. I wanted my square to be 9"x9", so I cut out a 10"x10" square.
On the underside of this square, measure out a line 1/2" down from the edge. Stick your Steam-A-Seam along this line, and fold over. Iron to seal, and repeat on all 4 sides. When you're done, you should have a 9"x9" square.
Step 6: Complete the Screen
After this light gray is all set, take your screen and, using Steam-A-Seam along the edges, steam it to it's border.
Use some chalk, and more formally sketch out the marks on the dress where you want your screen. When it's all set do the same thing, and use Steam-A-Seam along the edges and iron the completed screen to your dress.
Step 7: A & B Buttons
Use Steam-A-Seam and attach these buttons to the dress
Attach with Steam-A-Seam
Cut out and attach with Steam-A-Seam
When you're all set, get decked out in your retro threads. Looking good, gamer!