Wow you got some nice coastlines. As to the climate, sorry but I don't know much about that... however I would imagine that the smaller axial tilt is the least of your worries for climate... and that the tectonic activity that made the cost lines the way they are might affect the habitability of the coastal areas...
I also imagine that if there is less tilt the equator area might get hotter than here on earth and so be more of a desert and the area at the top and bottom would be colder.... but like I said I am not much for climate and would also like to hear some of our pro's weigh in on this.
You have nice clean lines. I see hand-drawn elements like you might have a tablet as well... What software are you using?
Good job so far and welcome to the guild!