Stable favourite this one, JTFM's 1/56th Stug IV with a few modifications. The kit comes with separate schurzen plates and rails, however I've re-fabricated the plates with plasticard but utilised the rails. the track guards have been sliced and thinned and deployed open.
As commonly seen, the rear decks on these were quite heavily used for stowage, so I've added various tarpaulins, a field modified stowage box and some ammunition boxes, all kept in place with a Heer Zeltbahn from metal foil. The commander is battlehonours, if i recall correctly, with some greenstuff and wire headphones.
As always, click on the individual pictures for the warts and all view, and more extensive pictures in my gallery: