If I may criticise, I'd say your letters aint bad at all but you got to give your letters equal visual weight. your O and I are way too small (didn't notice the I at first glance, thought it was just a wee bit of the A or an exclamation mark), lose the crown, its useless and make the right part of your Y go up to the top, at the same height as your H...if you do that it should give another look to your sketch and add legibility...
hope it helps