Usually, I bump the thread at least once per day so it doesn't vanish into the sea of roleplays/interest checks if I'm looking for more interest. You can also try advertising the roleplay to your friends, or you could advertise it in the status bar or #rp_advertising in RPGO.

Though, ultimately, I do think that you may be jumping the gun a little. The RP has only been up for two days, and I don't believe you made an interest check beforehand. I would suggest trying to make an interest check to drum up some interest, however, but I also think that it could be better to skip the interest check since you're already at the RP stage and just advertise it wherever you possibly can.