i dont normally use blues riffs.
when i do its just 1 4 5
where i do use blues is in my leads.
it's just a few scales ..
i like it
nobody can really show you whats best for you.
i suggest honestly that you jam out to some doors and find some kick ass organ playing and imitate that for a bit.
then try to twist it your own way
also. billy preston! yes.. definitely listen to that dood..