Help wanted for my PvZ Mod

So i am making a PvZ mod but i need a bunch of help for finish this like modelers, texture makers and a bit of coding :/

I already have 

Peashooter

Sunflower: (how i make it drop sun?)

Snow Pea

Repeater: (doesnt do more damage than peashooter or shoot faster)

Potato Mine: Broken (closes game for no reason)

Wall Nut: (doesnt attract zombies, now in the moment, its useless).

Puff Shroom:(off hit box)

Scaredy Shroom:(not dealling more damage than puff shroom and it has off hit box for some reason)

Fume Shroom:(not shooting more than caredy shroom or dealling more damage)

Seeds of each plant:(it works but spawns the plant inside the block you press)

Sun Catcher: Block that when right clicked has 20% of dropping sun because i dont know how i make it drop a random sun in a random moment)

Clorophyle: used to make the pea its obtained by using most of plant stuff in the crafting table

Snow Pea Pod:You have 2 versions of it one you can eat the other you can shoot (only obtainable in creative mode)

Pea: just like the snow pea pod but has no slow down effect

Mushrrom shoot: same thing as the pea