Hey suhan, if you have forgotten to download your kcet application form, you can still do it now and do not panic. 

Firstly check your mail which you gave while registering. If you do not find it in your mail ,then you must either have the challan copy or the information of the online transaction if you have made.  If you have the online transaction receipt then you can find your application number there, and if you have your challan copy then search for " kea ref number " on it, if it's written to be 112257472019 then excluding the first character write down the next 6 characters and that happen to be your application number.