This is fantastic!!!! Awesome work and no easy task for your very 1st PP, heck no easy task period. MC is one of my most favorite blocks. It is a challenging blocik to do and you did it proud. As others have suggested, audition some backgrounds. I would not use a color you currently have in the compass unless it is the very light you have on the inner ring of the compass. A very dark navy would really make the compass pop but so would a very light value as welll and if you matched that light it would give it the appearance of floating on the BG. I am sure whatever you decide will be spectacular.