.NET OR SQL developer

Question

HI Friends,... 

I have 1.8 experience in dot net As a fresher i joined a MNC company as programmer analyst.they put into to application support.most works related to DB and tools in .net.so no way to improve my knowledge.They didn't change into development team.so i  tried  another job.
And also I got a job in a medium level company as a software engg .it is financial domain .here also jobs related to DB.but able to gain knowledge in SQL server.In side by side doing asp.net applications.
i need to change my carrer after 6 months .because got 2 years experience .can you please tell how to improve my skills in both SQL and Dot net.
 can i leave from my current job with in 6 months..

I know the below concepts.

SQL:

1.Basic Query
2.function
3.Stored procedure
4.SQL Server Business Intelligence Development Studio
 5.Triggers and views

Dot Net.

OOPS conceps
grid view

ADO.NET
 ASP.NET controls


can you please tell , which area i need to improve.for 2 years exp other comp what knowledge except from me.

Thanks and please do needful.