everyone is different, some people catch on, get a rhythm and do great within a few hours...some people struggle for months...but slowly but surely improve. it just depends on YOU. if you practice every day you will see improvement...every day- if you only give it a try once in awhile it may be years before you are comfortable.
start small and work your way up to larger and larger projects; before you know it you will be quilting large quilts beautifully