Inkscape drawing arrows

Edit the nodes and make the lines slightly curved. Use Ctrlarrows, mouse wheel, or middle button drag to scroll the page down. Having made the change from Windows to Linux, I've also had to make the change from Adobe Illustrator to Inkscape. Adding arrows in inkscape using the line-ending option is quite limited.
Extensions Render Grid for a grid that will be visible outside Inkscape. With the Bezier tool draw a rough arrow. Fill with a bright color, like this light green.
Inkscape drawing arrows — photo 1
I'm stuck at trying to recreate the image which is below. For basics of object creation, selection, and transformation, see the Basic tutorial in Help Tutorials.