I have a drawing here, and I am looking to place some larger, cartoony arrows in the drawing.  If I sketch them and make a block, I get those awkward huge sketch endpoints making it look terrible.  Is there a way to not display the goofy giant end points?

My other method is to use paint or whatever to draw an arrow and paste it in.  The problem with that I'm having is that even though the background of the arrow is transparent, it doesn't come into solidworks with the background transparent, so it looks terrible with a solid color rectangle around my pasted graphic.

So my question is, how can I make my own custom arrow to come into a solidworks drawing cleanly?