Bring the correct Viola up from the bottom, it can be frozen to avoid damage. After it comes though the uppermost shot blocks, back into the right hand corner and shot buffer on what would be the second hit from the Viola if you were not freezing or avoiding it. Should the shot buffer be missed then the Viola will have to bounce around many more times before being on a cycle where the buffered shot will freeze it in the correct position. Get onto the right side of the Viola, Samus should be standing and partially clipped into the solid tile. Crouch jump and 3 or 4 frames after pressing jump (2 frame window) hold down. Samus will appear to be stuck between the bomb blocks and the solid tile. Press forwards or up to stand up and jump to clip through. If Samus doesn't clip at all down was pressed too soon, if Samus clips the first blocks but appears to be floating while aiming down then down was pressed too late.