You should start with copying existing designs or design features. Draw your designs on a piece of paper, then keep redrawing it until it looks good. When you're happy with the design, transfer it to a piece of cardboard. Cut it out and see how it fits in your hand. Make adjustments from there. Then trace your pattern onto steel and cut it out.
If you need help with designs, post up pictures here and ask for help before you commit to grinding it onto a piece of steel.
As for your current design it doesn't look much like paring knives I see in most kitchens. The upswept point doesn't look right. The blade is a little too tall for a paring knife. Also, it's nice to have a plungeless grind on a kitchen knife, or at least move the grind all of the way back to the heel.