I don't know what cake you are trying to make, but it looks like a sponge cake with extra ingredients. If you are trying to make a regular sponge cake, I have a great recipe: 150 gr selfraising flour 3 eggs 150 gr caster sugar 150 gr butter 1/2 tablespoon vanilla extract mix everything together and bake at 170 degrees Celcius for about 30 to 40 minutes. Than you can slice it in half and put some jelly and whipped cream mixed with some lemon juice between. Than you can decorate it whatever you want. Because of the lemon uice, it will notbe too sweet, just fresh. If you want to make it even less sweeter, add some fresh fruit too. Not canned fruit, but really fresh fruit. This recipe works for me very well, and nobody that tasted it has ever complaned about sweetness. Good luck!
