So I am relatively new to gardening, starting off my first real en devour. All of my plants were doing well in their seedling pots (corn, bean and pumpkin from seed in perlite/coco coir/worm castings, tomatoes, peppers, celery bought from store as plants). I, unfortunately, did not get around to preparing my bed in advance so I tilled the area free of grass, got as deep as I could in the clay and then added a 2-5 inch layer of compost, top soil and cow manure. I added 4 lbs for roughly 250 square feet of 5-3-3 (I think) espoma brand organic dry fertilizer. The recommendations were 4 lbs for every 100 square feet. I also added a pinch of that fertilizer into the bottom of every hole for each plant. I've attached images of the plants but none of them are doing well and don't seem to have grown at all since I planted them. The corn looks just like it is deficient in nitrogen but then other unhappy plants make me suspect that the problem is universal and not just nitrogen. I figure something must be wrong with the soil, but I just don't know what or how to get them better. Any ideas on what is wrong and what I can do to try to make my first garden not a total failure!!!?!?!?!?