First ever grow

Plant grew a good amount started LST so lots of new lower vegetation found some weird markings on the plants fan leaves not sure what it is any input is welcome. the plant looks really healthy very green leaves no signs of deficiencies but At 4 weeks I thought the plant would be bigger. I’ve seen this same strain at 4 weeks and by then the plant has stretched both vertically and horizontally. Also lots of new pistils some are starting to turn that orange color not sure if that’s normal for its age but other than that the plant is looking good.