if the riser pops off, ,re glue with epoxy(or if it starts to lift there)
I like to make my board bows with no glue on handle,, so nothing to pop off( I like to eliminate as many variables as possible to insure success)
you will make more mistakes as you go,, all the best bow makers here have made lots of mistakes and try not to repeat them,, lots of great advice here,, just continue with what you have,,