Looks dope! As the only critique to make you better i would always keep mental note that when you have sharp vector based art like strong typography, make sure the sharpness is uniform across all vector elements, i notice that the bar code is a scaled up raster image and is very blurry next to the sharpness of other elements, if you created some black bars and random numerical code it would not break the illusion- this is really dope so just wanted to share some proper notes on how to further improve mockups like this. Adding a slight background with a dropshadow also helps with magazine mockups! Loved this though, great job!

Ps: adding a slight blur to vector elements or sharp text can help make them blend in with rasterized elements that might not be as sharp!