The first step is to get in touch with UNHCR and to be identified as a refugee. You have to get in touch with UNHCR in Spain: http://www.unhcr.org/spain.htmlhow to be identified by UNHCR for resettlement in Canada.? what can i do for that?
It will be up to them if you're identified for resettlement to Canada - or another country. It's quite possible another country may be selected for you. You don't get to pick whichever country you want.
If your case is already being processed in Spain, then I'm not sure that you'll be selected for resettlement elsewhere. As a refugee, your only option may be Spain.