cake

I was bored, so I decided to bake a cake. Because I like coffee, I decided on a coffee cake, using a Victoria Sponge recipe; I used large eggs instead of small (because I was doing a loaf, not a sandwich, so it would need to be moister). It didn't turn out too well; the outer half is pretty good, though a little too moist (maybe 2--2.5 eggs?). The inner half is pretty disasterous, since it's all gooey. My theories:

Any thoughts from people who can bake better than I do?