Take your time with your build and you'll get a more harmonious outcome! What caliber did you buy? Let us know if you have any questions about building, loading and shooting your rifle.
Get yourself a set of wood carving tools (likely Harbor Freight has them) as you will probably have some fine inletting to do. Don't use a dremel tool it removes wood too fast. You can always take more out but you can't put it back in- you can only fill in your mistake.