I like neither the rear landing gears nor the cargo/troop bay in general. The landing gears don't seem thick enough or at the right angle - I have a hard time believing that they're holding up the weight of the pelican in any reliable manner. The troop bay just looks... wrong. I suggest you look more at the H1 model for proportion reference. Though I understand the H3 design is quite different, it doesn't look like what you have there.