Meshing a circular arc airfoil with close boundary
 

Hi, Please I have been tying to mesh this profile for some time.
I am new to CFD, I could not use blocking for the airfoil section. I used surface mesh for the airfoil section
1) I want to know if the mesh that I have created is ok as seen in the picture, the quality is 0.44.
2) I could not get the leading edge to be perfect curve as shown in the attached picture(I need guide on how to do this).
If it is ok , I could not get a good results (lift (Negative) and drag are very high) when I ran the simulation in fluent.
I will also need a guide on how I can use the blocking method to be able to compare my results.
Thank you