Word order and verb endings

[..sexyredhair..756]

i need help with a couple of sentences - it appears im rubbish at word order and verb endings
if some one could correct them for me, i'd be incredibly thankful!!

1. cuándo era siete, mi madre al fin ha persuadida me comer desconfiado comidas. Durante la edades siete a doce, era una grasa niño.

2. ahora sin embargo, estoy tampoco grasa o delgada.

3. estoy alambique no como delgada como gustaria estar, pero gustanria pensar estoy termino medio tamaño
(that one should say something like - i'm still not as thin as i'd like to be but i'd like to think im average size.)

4. ! cuando era en ano seis, alla era una chica en ano tres esa era exactamente la forma de una playa-bola!
that should say - when i was in year 6 there was a girl in year 3 that was the exact shape of a beach ball


i dont know if playa-bola is actually beach ball but i thought it was a good guess methinks
please help asap!
i suck at spanish big time
xx