co sleeping

ok mommas who succussfully moved their toddler into his/her OWN bed.. 
howd you do it??
no comments like treasure this moment ect please
i do treasure the moment!! but i feel my almost 3 year old (Mason) has GREATLY benefitted from sleeping with me, i dont want his brother due mid april (Simon) to not have that same opportunity..
tho i have learned if i switched Mason when he was still in a crib it would have been easier transition. but hes in a toddler bed now..
ideas/tips/successful stories?? 
please help!!