You don't have to select a stroke paint, so leave it empty. Now do the same for the neck of the bottle, only pick a slightly darker color blue. Pick a nice light blue color to use as the fill color. This isn't just an Inkscape thing, it's how all vector images are build. The stroke can be seen as a line around the edges of the shape. The fill defines the base paint for the object. You see multiple tabs here for fill and stroke. Go to Object > Fill and Stroke in the menu to open up the color selector. Select the circle shape you've drawn in the previous step. You can rearrange the order of the shapes by going to the Object menu and selecting Raise or Lower. Adjust the nodes until the shape is as desired. You can set up a basic shape and adjust it later by double clicking the shape or selecting the Node Tool (F2). Even in the example image you can see it's all wobbly, but that's not going to be visible in the end result. There is a cork going to fall over this part. Connect the starting node with the ending node to finish your shape. If you want to draw a straight line use the shortcut Shift+L. You can hold down the right mouse button and drag to adjust the angle of the line between the nodes. Start by clicking on the canvas to place a node. Use this tool to draw the neck of the bottle. Once the base is ready, grab the Bezier Tool (Shift+F6).

Hold Ctrl while dragging to create a perfectly round circle shape. Draw an eclipse using the Ellipse Tool (F5). We are going to start with the basic shape of the potion bottle. When you're all set-up, launch Inkscape and start the tutorial! Draw a basic bottle shape

That makes it ideal for people who are just starting to learn how to make vector graphics. It might look a little bit less fancy than, let say, Adobe Illustrator, but it has all the same features and it's totally free. Inkscape is an open source vector graphics editor. In this tutorial you will learn how to make vector potion bottles in Inkscape. On the way, this tutorial will teach you how to use Inkscape as a vector graphics editor. You will make a potion bottle with a cork and special content. Learn how to draw vector potion bottles with this Inkscape vector drawing tutorial.

Inkscape vector tutorials