Its great but you should add shading and a smear tool. Like to add color and smear it on you drawing. You should also make the lines even thinner because I have a hard time with little stuff. Other than that, its the perfect app for digital artists like meh, thanks! Also you should add a fill in tool where you can just fill the space in instead of using so much time
FallenAngel AJ about Sketch Pad - My Drawing Board, v3.1