Help me in this ds game please!?

I have tinkerbell and the lost treasure game for my ds. I started my tinker fairy and i was wondering, how do you make a door knob? Please help me! Thank you!

Take the purple shell from the mushroom and fly to the mushroom on the far left of the screen, go back to get the screw and fly that over to the far left mushroom. Wait for your fairy to put them together and then go to the door on the far right of the screen which should now be sparkling. Tap on it to unlock and enter! Took me ages too!

Tinkerbell & the Lost Treasure (DS)

Children’s Tinkerbell Earrings with Dangling Stars $49 Beautiful sterling silver and enamel Tinkerbell star earrings are a great gift for little girls. (DIS04E) 49 Authentic Walt Disney jewelry Measures approx 5/8″ x 3/8″ Post backs are for pierced ears only Comes in a nice gift box More officially licensed Disney jewelry shown below

14k Gold Enamel Tinkerbell Bracelet and Teal Silk Cord $179 Officially licensed Walt Disney Tinkerbell bracelet on an aqua colored silk cord bracelet. (DIS02B) 179 14kt gold and enamel Tinkerbell charm and four gold beads Adjustable bracelet up to 6.1/4″ long Comes in a nice gift box

Disney Chamilia Tinkerbell Charm Dangle Bead $45 Sterling silver dangling Tinkerbell bead. (355-DIS-106) Authentic Disney Chamilia charm View entire Euro beads collection here Mix and match with other charms to create your own personalized Disney experience More Chamilia beads shown below

Authentic Tinkerbell Necklace with Star and Pearl Dangles $129 From the Wonderful World of Disney comes this genuine sterling silver enamel Tinkerbell charm necklace with dangling pearl and star. (DIS16N) 129. Official licensed Disney jewelry Adjustable chain – 13″, 14″, or 15 inches long Comes in a nice gift box More children’s jewelry shown below

The Lost Treasures of Alexandria $19.99 The Lost Treasures of Alexandria