Fixing this Painting

I finished a painting...and had a buyer for it...they were only waiting for me to varnish it. So I did. The varnish wouldn't dry!!! It was thick and sticky and gathered dust, cat hair etc. I took it all off...or so I thought. It remained sticky... for 4 months. Finally I was merciless and removed every trace of varnish from the painting. Some paint came with it...so now I have to repaint the top layer. The good news is...the people still want it when I get it finished. I had previously sold them a more expensive painting in lieu of this one..for the same price as this one. Anyway...here it is so far. Just have to finish highlighting the water, the hills and put in some weeds along the front.