ah wonderful your drawing !~ guys' corrections below have modify your drawing pretty well ,so i m just answer your questions. firstly,"到" is a verb ,means reach,arrive,it is uesd singly in this meaning ;or you can also use it after verbs of sense like 学、看、想、闻（smell）、摸（touch）and so on to connect the verbs and objects . "了" can indicate both the past and recentness , in some way it's similar to the perfect sense in english . for instance , 我学到了很多知识 means i have learned a lot knowledge . so 想 and 到 are not the same . hope you enjoy learning chinese ,want to be friend with you , i am on my tough way of learning english too~