Rakesh,
The Layout Review App note has a ton of useful info on reviewing one's layout board. (http://www.ti.com/litv/pdf/swra367a)
Things that stand out from the image you've shown of the top layer, proximity of supply decoupling caps to the pins they decouple. Also, these decoupling caps should be in the current path. Also, if possible increase the via stitching between the different layers to make a solid ground plane. You will find this explained and more in the app note above. Hope this helps.