This is timely and good to know! How to Sharpen Your Rotary Cutter Blade. Fold a piece of foil a few times and slice away with your dull rotary cutter, pausing a few times to test it out on your fabric scraps till it starts slicing away your fabric too! You will end up with a like-new rotary cutter!
dress, apparently its easy to sew: It's just 4 rectangles. Measure shoulder to hem length, then girth at widest part (hips?) and divide by 4. Add seam allowance. Sew allowing for neckline, arm holes. No pattern needed. 1/2 hour, max! (super easy cute dress idea)