A "me too!" post.
Patience. If people are enjoying your other work they will eventually try this.
150 pages is pretty short for "epic" fantasy. Yes, it's part one, but that in itself will put a lot of people off (having been badly burnt by various famous series, many readers hold off to make sure the "epic" will get finished in their lifetimes).
Keep writing. Finish the epic. Good luck (however hard you work, there is always an element of luck).