One thing at a time... when you finish one thing, start something else. Once that's finished, make sure the two "mesh well"... then move on to the third. When that's finished, make sure the three that you've finished "mesh well" and move on to the 4th.
If you do little bits of everything, you'll never finish anything. Ask me how I know.
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"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"